package v2_test

import (
	"encoding/hex"
	"encoding/json"
	"fmt"
	"math"
	"math/big"
	"strconv"
	"strings"
	"testing"
	"time"

	"github.com/ethereum/go-ethereum"
	"github.com/ethereum/go-ethereum/accounts/abi"
	"github.com/ethereum/go-ethereum/accounts/abi/bind"
	"github.com/ethereum/go-ethereum/common"
	"github.com/ethereum/go-ethereum/common/hexutil"
	gethtypes "github.com/ethereum/go-ethereum/core/types"
	"github.com/ethereum/go-ethereum/eth/ethconfig"
	"github.com/google/uuid"
	"github.com/jmoiron/sqlx"
	"github.com/onsi/gomega"
	"github.com/shopspring/decimal"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/mock"
	"github.com/stretchr/testify/require"
	"gopkg.in/guregu/null.v4"

	"github.com/smartcontractkit/quarantine"

	commonassets "github.com/smartcontractkit/chainlink-common/pkg/assets"
	commonconfig "github.com/smartcontractkit/chainlink-common/pkg/config"
	"github.com/smartcontractkit/chainlink-common/pkg/sqlutil"
	commontypes "github.com/smartcontractkit/chainlink-common/pkg/types"
	"github.com/smartcontractkit/chainlink-common/pkg/utils/tests"
	"github.com/smartcontractkit/chainlink-evm/pkg/assets"
	"github.com/smartcontractkit/chainlink-evm/pkg/client/clienttest"
	"github.com/smartcontractkit/chainlink-evm/pkg/config/toml"
	"github.com/smartcontractkit/chainlink-evm/pkg/gas"
	"github.com/smartcontractkit/chainlink-evm/pkg/keys"
	evmlogger "github.com/smartcontractkit/chainlink-evm/pkg/log"
	evmtestutils "github.com/smartcontractkit/chainlink-evm/pkg/testutils"
	"github.com/smartcontractkit/chainlink-evm/pkg/types"
	evmutils "github.com/smartcontractkit/chainlink-evm/pkg/utils"
	ubig "github.com/smartcontractkit/chainlink-evm/pkg/utils/big"
	txmgrcommon "github.com/smartcontractkit/chainlink-framework/chains/txmgr"
	txmgrtypes "github.com/smartcontractkit/chainlink-framework/chains/txmgr/types"

	"github.com/smartcontractkit/chainlink-evm/gethwrappers/generated/batch_blockhash_store"
	"github.com/smartcontractkit/chainlink-evm/gethwrappers/generated/batch_vrf_coordinator_v2"
	"github.com/smartcontractkit/chainlink-evm/gethwrappers/generated/blockhash_store"
	"github.com/smartcontractkit/chainlink-evm/gethwrappers/generated/link_token_interface"
	"github.com/smartcontractkit/chainlink-evm/gethwrappers/generated/mock_v3_aggregator_contract"
	"github.com/smartcontractkit/chainlink-evm/gethwrappers/generated/vrf_consumer_v2"
	"github.com/smartcontractkit/chainlink-evm/gethwrappers/generated/vrf_consumer_v2_upgradeable_example"
	"github.com/smartcontractkit/chainlink-evm/gethwrappers/generated/vrf_coordinator_v2"
	"github.com/smartcontractkit/chainlink-evm/gethwrappers/generated/vrf_external_sub_owner_example"
	"github.com/smartcontractkit/chainlink-evm/gethwrappers/generated/vrf_malicious_consumer_v2"
	"github.com/smartcontractkit/chainlink-evm/gethwrappers/generated/vrf_owner"
	"github.com/smartcontractkit/chainlink-evm/gethwrappers/generated/vrf_single_consumer_example"
	"github.com/smartcontractkit/chainlink-evm/gethwrappers/generated/vrfv2_proxy_admin"
	"github.com/smartcontractkit/chainlink-evm/gethwrappers/generated/vrfv2_reverting_example"
	"github.com/smartcontractkit/chainlink-evm/gethwrappers/generated/vrfv2_transparent_upgradeable_proxy"
	"github.com/smartcontractkit/chainlink-evm/gethwrappers/generated/vrfv2_wrapper"
	"github.com/smartcontractkit/chainlink-evm/gethwrappers/generated/vrfv2_wrapper_consumer_example"
	"github.com/smartcontractkit/chainlink-evm/pkg/chains/legacyevm"
	"github.com/smartcontractkit/chainlink-evm/pkg/txmgr"
	"github.com/smartcontractkit/chainlink/v2/core/internal/cltest"
	"github.com/smartcontractkit/chainlink/v2/core/internal/testutils"
	"github.com/smartcontractkit/chainlink/v2/core/internal/testutils/configtest"
	"github.com/smartcontractkit/chainlink/v2/core/internal/testutils/evmtest"
	"github.com/smartcontractkit/chainlink/v2/core/logger"
	"github.com/smartcontractkit/chainlink/v2/core/services/chainlink"
	"github.com/smartcontractkit/chainlink/v2/core/services/job"
	"github.com/smartcontractkit/chainlink/v2/core/services/keystore"
	"github.com/smartcontractkit/chainlink/v2/core/services/keystore/keys/ethkey"
	"github.com/smartcontractkit/chainlink/v2/core/services/keystore/keys/vrfkey"
	"github.com/smartcontractkit/chainlink/v2/core/services/pipeline"
	"github.com/smartcontractkit/chainlink/v2/core/services/signatures/secp256k1"
	"github.com/smartcontractkit/chainlink/v2/core/services/vrf/proof"
	v1 "github.com/smartcontractkit/chainlink/v2/core/services/vrf/v1"
	v22 "github.com/smartcontractkit/chainlink/v2/core/services/vrf/v2"
	"github.com/smartcontractkit/chainlink/v2/core/services/vrf/vrfcommon"
	"github.com/smartcontractkit/chainlink/v2/core/services/vrf/vrftesthelpers"
	"github.com/smartcontractkit/chainlink/v2/core/testdata/testspecs"
	"github.com/smartcontractkit/chainlink/v2/core/utils"
	"github.com/smartcontractkit/chainlink/v2/core/utils/testutils/heavyweight"
)

var defaultMaxGasPrice = uint64(1e12)

type coordinatorV2UniverseCommon struct {
	// Golang wrappers of solidity contracts
	consumerContracts                []vrftesthelpers.VRFConsumerContract
	consumerContractAddresses        []common.Address
	rootContract                     v22.CoordinatorV2_X
	rootContractAddress              common.Address
	linkContract                     *link_token_interface.LinkToken
	linkContractAddress              common.Address
	linkEthFeedAddress               common.Address
	bhsContract                      *blockhash_store.BlockhashStore
	bhsContractAddress               common.Address
	batchBHSContract                 *batch_blockhash_store.BatchBlockhashStore
	batchBHSContractAddress          common.Address
	maliciousConsumerContract        vrftesthelpers.VRFConsumerContract
	maliciousConsumerContractAddress common.Address
	revertingConsumerContract        vrftesthelpers.VRFConsumerContract
	revertingConsumerContractAddress common.Address
	// This is a VRFConsumerV2Upgradeable wrapper that points to the proxy address.
	consumerProxyContract        vrftesthelpers.VRFConsumerContract
	consumerProxyContractAddress common.Address
	proxyAdminAddress            common.Address

	// Abstract representation of the ethereum blockchain
	backend        types.Backend
	coordinatorABI *abi.ABI
	consumerABI    *abi.ABI

	// Cast of participants
	vrfConsumers []*bind.TransactOpts // Authors of consuming contracts that request randomness
	sergey       *bind.TransactOpts   // Owns all the LINK initially
	neil         *bind.TransactOpts   // Node operator running VRF service
	ned          *bind.TransactOpts   // Secondary node operator
	nallory      *bind.TransactOpts   // Oracle transactor
	evil         *bind.TransactOpts   // Author of a malicious consumer contract
	reverter     *bind.TransactOpts   // Author of always reverting contract
}

type coordinatorV2Universe struct {
	coordinatorV2UniverseCommon
	vrfOwner                           *vrf_owner.VRFOwner
	vrfOwnerAddress                    common.Address
	vrfOwnerNew                        *vrf_owner.VRFOwner
	vrfOwnerAddressNew                 common.Address
	oldRootContract                    v22.CoordinatorV2_X
	oldRootContractAddress             common.Address
	oldBatchCoordinatorContract        *batch_vrf_coordinator_v2.BatchVRFCoordinatorV2
	oldBatchCoordinatorContractAddress common.Address
	batchCoordinatorContract           *batch_vrf_coordinator_v2.BatchVRFCoordinatorV2
	batchCoordinatorContractAddress    common.Address
}

func makeTestTxm(t *testing.T, txStore txmgr.TestEvmTxStore, keyStore keystore.Eth, ec *clienttest.Client) txmgrcommon.TxManager[*big.Int, *types.Head, common.Address, common.Hash, common.Hash, types.Nonce, gas.EvmFee] {
	_, _, evmConfig := txmgr.MakeTestConfigs(t)
	txmConfig := txmgr.NewEvmTxmConfig(evmConfig)
	ks := keys.NewStore(keystore.NewEthSigner(keyStore, ec.ConfiguredChainID()))
	txm := txmgr.NewEvmTxm(ec.ConfiguredChainID(), txmConfig, evmConfig.Transactions(), ks, logger.TestLogger(t), nil, nil,
		nil, txStore, nil, nil, nil, nil, nil, nil)

	return txm
}

func newVRFCoordinatorV2Universe(t *testing.T, key ethkey.KeyV2, numConsumers int) coordinatorV2Universe {
	tests.SkipShort(t, "VRFCoordinatorV2Universe")
	oracleTransactor := &bind.TransactOpts{
		From:   key.Address,
		Signer: key.SignerFn(testutils.SimulatedChainID),
	}
	var (
		sergey       = evmtestutils.MustNewSimTransactor(t)
		neil         = evmtestutils.MustNewSimTransactor(t)
		ned          = evmtestutils.MustNewSimTransactor(t)
		evil         = evmtestutils.MustNewSimTransactor(t)
		reverter     = evmtestutils.MustNewSimTransactor(t)
		nallory      = oracleTransactor
		vrfConsumers []*bind.TransactOpts
	)

	// Create consumer contract deployer identities
	for range numConsumers {
		vrfConsumers = append(vrfConsumers, evmtestutils.MustNewSimTransactor(t))
	}

	genesisData := gethtypes.GenesisAlloc{
		sergey.From:                {Balance: assets.Ether(1000).ToInt()},
		neil.From:                  {Balance: assets.Ether(1000).ToInt()},
		ned.From:                   {Balance: assets.Ether(1000).ToInt()},
		nallory.From:               {Balance: assets.Ether(1000).ToInt()},
		evil.From:                  {Balance: assets.Ether(1000).ToInt()},
		reverter.From:              {Balance: assets.Ether(1000).ToInt()},
		common.HexToAddress("0x0"): {Balance: assets.Ether(1000).ToInt()},
	}
	for _, consumer := range vrfConsumers {
		genesisData[consumer.From] = gethtypes.Account{
			Balance: assets.Ether(1000).ToInt(),
		}
	}

	consumerABI, err := abi.JSON(strings.NewReader(
		vrf_consumer_v2.VRFConsumerV2ABI))
	require.NoError(t, err)
	coordinatorABI, err := abi.JSON(strings.NewReader(
		vrf_coordinator_v2.VRFCoordinatorV2ABI))
	require.NoError(t, err)
	backend := cltest.NewSimulatedBackend(t, genesisData, ethconfig.Defaults.Miner.GasCeil)
	h, err := backend.Client().HeaderByNumber(testutils.Context(t), nil)
	require.NoError(t, err)
	require.LessOrEqual(t, h.Time, uint64(math.MaxInt64))
	blockTime := time.Unix(int64(h.Time), 0) //nolint:gosec // G115 false positive
	// Move the clock closer to the current time. We set first block to be 24 hours ago.
	err = backend.AdjustTime(time.Since(blockTime) - 24*time.Hour)
	require.NoError(t, err)
	backend.Commit()

	// Deploy link
	linkAddress, _, linkContract, err := link_token_interface.DeployLinkToken(
		sergey, backend.Client())
	require.NoError(t, err, "failed to deploy link contract to simulated ethereum blockchain")
	backend.Commit()

	// Deploy feed
	linkEthFeed, _, _, err :=
		mock_v3_aggregator_contract.DeployMockV3AggregatorContract(
			evil, backend.Client(), 18, vrftesthelpers.WeiPerUnitLink.BigInt()) // 0.01 eth per link
	require.NoError(t, err)
	backend.Commit()

	// Deploy blockhash store
	bhsAddress, _, bhsContract, err := blockhash_store.DeployBlockhashStore(neil, backend.Client())
	require.NoError(t, err, "failed to deploy BlockhashStore contract to simulated ethereum blockchain")
	backend.Commit()

	// Deploy batch blockhash store
	batchBHSAddress, _, batchBHSContract, err := batch_blockhash_store.DeployBatchBlockhashStore(neil, backend.Client(), bhsAddress)
	require.NoError(t, err, "failed to deploy BatchBlockhashStore contract to simulated ethereum blockchain")
	backend.Commit()

	// Deploy VRF V2 coordinator
	coordinatorAddress, _, coordinatorContract, err :=
		vrf_coordinator_v2.DeployVRFCoordinatorV2(
			neil, backend.Client(), linkAddress, bhsAddress, linkEthFeed /* linkEth*/)
	require.NoError(t, err, "failed to deploy VRFCoordinatorV2 contract to simulated ethereum blockchain")
	backend.Commit()

	// Deploy batch VRF V2 coordinator
	batchCoordinatorAddress, _, batchCoordinatorContract, err :=
		batch_vrf_coordinator_v2.DeployBatchVRFCoordinatorV2(
			neil, backend.Client(), coordinatorAddress,
		)
	require.NoError(t, err, "failed to deploy BatchVRFCoordinatorV2 contract to simulated ethereum blockchain")
	backend.Commit()

	// Deploy old VRF v2 coordinator from bytecode
	oldRootContractAddress, oldRootContract := deployOldCoordinator(
		t, linkAddress, bhsAddress, linkEthFeed, backend, neil)

	// Deploy the VRFOwner contract, which will own the VRF coordinator
	// in some tests.
	// Don't transfer ownership now because it'll unnecessarily complicate
	// tests that don't really use this code path (which will be 99.9% of all
	// real-world use cases).
	vrfOwnerAddress, _, vrfOwner, err := vrf_owner.DeployVRFOwner(
		neil, backend.Client(), oldRootContractAddress,
	)
	require.NoError(t, err, "failed to deploy VRFOwner contract to simulated ethereum blockchain")
	backend.Commit()

	vrfOwnerAddressNew, _, vrfOwnerNew, err := vrf_owner.DeployVRFOwner(
		neil, backend.Client(), coordinatorAddress,
	)
	require.NoError(t, err, "failed to deploy VRFOwner contract for vrfOwnerNew to simulated ethereum blockchain")
	backend.Commit()

	// Deploy batch VRF V2 coordinator
	oldBatchCoordinatorAddress, _, oldBatchCoordinatorContract, err :=
		batch_vrf_coordinator_v2.DeployBatchVRFCoordinatorV2(
			neil, backend.Client(), coordinatorAddress,
		)
	require.NoError(t, err, "failed to deploy BatchVRFCoordinatorV2 contract wrapping old vrf coordinator v2 to simulated ethereum blockchain")
	backend.Commit()

	// Create the VRF consumers.
	var (
		consumerContracts         []vrftesthelpers.VRFConsumerContract
		consumerContractAddresses []common.Address
	)
	for _, author := range vrfConsumers {
		// Deploy a VRF consumer. It has a starting balance of 500 LINK.
		consumerContractAddress, _, consumerContract, err2 :=
			vrf_consumer_v2.DeployVRFConsumerV2(
				author, backend.Client(), coordinatorAddress, linkAddress)
		require.NoError(t, err2, "failed to deploy VRFConsumer contract to simulated ethereum blockchain")
		backend.Commit()
		_, err2 = linkContract.Transfer(sergey, consumerContractAddress, assets.Ether(500).ToInt()) // Actually, LINK
		require.NoError(t, err2, "failed to send LINK to VRFConsumer contract on simulated ethereum blockchain")
		backend.Commit()

		consumerContracts = append(consumerContracts, vrftesthelpers.NewVRFConsumerV2(consumerContract))
		consumerContractAddresses = append(consumerContractAddresses, consumerContractAddress)

		backend.Commit()
	}

	// Deploy malicious consumer with 1 link
	maliciousConsumerContractAddress, _, maliciousConsumerContract, err :=
		vrf_malicious_consumer_v2.DeployVRFMaliciousConsumerV2(
			evil, backend.Client(), coordinatorAddress, linkAddress)
	backend.Commit()
	require.NoError(t, err, "failed to deploy VRFMaliciousConsumer contract to simulated ethereum blockchain")
	_, err = linkContract.Transfer(sergey, maliciousConsumerContractAddress, assets.Ether(1).ToInt()) // Actually, LINK
	require.NoError(t, err, "failed to send LINK to VRFMaliciousConsumer contract on simulated ethereum blockchain")
	backend.Commit()

	// Deploy upgradeable consumer, proxy, and proxy admin
	upgradeableConsumerAddress, _, _, err := vrf_consumer_v2_upgradeable_example.DeployVRFConsumerV2UpgradeableExample(neil, backend.Client())
	require.NoError(t, err, "failed to deploy upgradeable consumer to simulated ethereum blockchain")
	backend.Commit()

	proxyAdminAddress, _, proxyAdmin, err := vrfv2_proxy_admin.DeployVRFV2ProxyAdmin(neil, backend.Client())
	require.NoError(t, err)
	backend.Commit()

	// provide abi-encoded initialize function call on the implementation contract
	// so that it's called upon the proxy construction, to initialize it.
	upgradeableAbi, err := vrf_consumer_v2_upgradeable_example.VRFConsumerV2UpgradeableExampleMetaData.GetAbi()
	require.NoError(t, err)
	initializeCalldata, err := upgradeableAbi.Pack("initialize", coordinatorAddress, linkAddress)
	hexified := hexutil.Encode(initializeCalldata)
	t.Log("initialize calldata:", hexified, "coordinator:", coordinatorAddress.String(), "link:", linkAddress)
	require.NoError(t, err)
	proxyAddress, _, _, err := vrfv2_transparent_upgradeable_proxy.DeployVRFV2TransparentUpgradeableProxy(
		neil, backend.Client(), upgradeableConsumerAddress, proxyAdminAddress, initializeCalldata)
	require.NoError(t, err)
	backend.Commit()

	_, err = linkContract.Transfer(sergey, proxyAddress, assets.Ether(500).ToInt()) // Actually, LINK
	require.NoError(t, err)
	backend.Commit()

	implAddress, err := proxyAdmin.GetProxyImplementation(nil, proxyAddress)
	require.NoError(t, err)
	t.Log("impl address:", implAddress.String())
	require.Equal(t, upgradeableConsumerAddress, implAddress)

	proxiedConsumer, err := vrf_consumer_v2_upgradeable_example.NewVRFConsumerV2UpgradeableExample(
		proxyAddress, backend.Client())
	require.NoError(t, err)

	cAddress, err := proxiedConsumer.COORDINATOR(nil)
	require.NoError(t, err)
	t.Log("coordinator address in proxy to upgradeable consumer:", cAddress.String())
	require.Equal(t, coordinatorAddress, cAddress)

	lAddress, err := proxiedConsumer.LINKTOKEN(nil)
	require.NoError(t, err)
	t.Log("link address in proxy to upgradeable consumer:", lAddress.String())
	require.Equal(t, linkAddress, lAddress)

	// Deploy always reverting consumer
	revertingConsumerContractAddress, _, revertingConsumerContract, err := vrfv2_reverting_example.DeployVRFV2RevertingExample(
		reverter, backend.Client(), coordinatorAddress, linkAddress,
	)
	require.NoError(t, err, "failed to deploy VRFRevertingExample contract to simulated eth blockchain")
	backend.Commit()
	_, err = linkContract.Transfer(sergey, revertingConsumerContractAddress, assets.Ether(500).ToInt()) // Actually, LINK
	require.NoError(t, err, "failed to send LINK to VRFRevertingExample contract on simulated eth blockchain")
	backend.Commit()

	// Set the configuration on the coordinator.
	_, err = coordinatorContract.SetConfig(neil,
		uint16(1),                              // minRequestConfirmations
		uint32(2.5e6),                          // gas limit
		uint32(60*60*24),                       // stalenessSeconds
		uint32(v22.GasAfterPaymentCalculation), // gasAfterPaymentCalculation
		big.NewInt(1e16),                       // 0.01 eth per link fallbackLinkPrice
		vrf_coordinator_v2.VRFCoordinatorV2FeeConfig{
			FulfillmentFlatFeeLinkPPMTier1: uint32(1000),
			FulfillmentFlatFeeLinkPPMTier2: uint32(1000),
			FulfillmentFlatFeeLinkPPMTier3: uint32(100),
			FulfillmentFlatFeeLinkPPMTier4: uint32(10),
			FulfillmentFlatFeeLinkPPMTier5: uint32(1),
			ReqsForTier2:                   big.NewInt(10),
			ReqsForTier3:                   big.NewInt(20),
			ReqsForTier4:                   big.NewInt(30),
			ReqsForTier5:                   big.NewInt(40),
		},
	)
	require.NoError(t, err, "failed to set coordinator configuration")
	backend.Commit()

	// Set the configuration on the old coordinator.
	_, err = oldRootContract.SetConfig(neil,
		uint16(1),                              // minRequestConfirmations
		uint32(2.5e6),                          // gas limit
		uint32(60*60*24),                       // stalenessSeconds
		uint32(v22.GasAfterPaymentCalculation), // gasAfterPaymentCalculation
		big.NewInt(1e16),                       // 0.01 eth per link fallbackLinkPrice
		vrf_coordinator_v2.VRFCoordinatorV2FeeConfig{
			FulfillmentFlatFeeLinkPPMTier1: uint32(1000),
			FulfillmentFlatFeeLinkPPMTier2: uint32(1000),
			FulfillmentFlatFeeLinkPPMTier3: uint32(100),
			FulfillmentFlatFeeLinkPPMTier4: uint32(10),
			FulfillmentFlatFeeLinkPPMTier5: uint32(1),
			ReqsForTier2:                   big.NewInt(10),
			ReqsForTier3:                   big.NewInt(20),
			ReqsForTier4:                   big.NewInt(30),
			ReqsForTier5:                   big.NewInt(40),
		},
	)
	require.NoError(t, err, "failed to set old coordinator configuration")
	backend.Commit()

	return coordinatorV2Universe{
		coordinatorV2UniverseCommon: coordinatorV2UniverseCommon{
			vrfConsumers:                     vrfConsumers,
			consumerContracts:                consumerContracts,
			consumerContractAddresses:        consumerContractAddresses,
			revertingConsumerContract:        vrftesthelpers.NewRevertingConsumer(revertingConsumerContract),
			revertingConsumerContractAddress: revertingConsumerContractAddress,

			consumerProxyContract:        vrftesthelpers.NewUpgradeableConsumer(proxiedConsumer),
			consumerProxyContractAddress: proxiedConsumer.Address(),
			proxyAdminAddress:            proxyAdminAddress,

			rootContract:                     v22.NewCoordinatorV2(coordinatorContract),
			rootContractAddress:              coordinatorAddress,
			linkContract:                     linkContract,
			linkContractAddress:              linkAddress,
			linkEthFeedAddress:               linkEthFeed,
			bhsContract:                      bhsContract,
			bhsContractAddress:               bhsAddress,
			batchBHSContract:                 batchBHSContract,
			batchBHSContractAddress:          batchBHSAddress,
			maliciousConsumerContract:        vrftesthelpers.NewMaliciousConsumer(maliciousConsumerContract),
			maliciousConsumerContractAddress: maliciousConsumerContractAddress,
			backend:                          backend,
			coordinatorABI:                   &coordinatorABI,
			consumerABI:                      &consumerABI,
			sergey:                           sergey,
			neil:                             neil,
			ned:                              ned,
			nallory:                          nallory,
			evil:                             evil,
			reverter:                         reverter,
		},
		vrfOwner:                           vrfOwner,
		vrfOwnerAddress:                    vrfOwnerAddress,
		vrfOwnerNew:                        vrfOwnerNew,
		vrfOwnerAddressNew:                 vrfOwnerAddressNew,
		oldRootContractAddress:             oldRootContractAddress,
		oldRootContract:                    v22.NewCoordinatorV2(oldRootContract),
		oldBatchCoordinatorContract:        oldBatchCoordinatorContract,
		oldBatchCoordinatorContractAddress: oldBatchCoordinatorAddress,
		batchCoordinatorContract:           batchCoordinatorContract,
		batchCoordinatorContractAddress:    batchCoordinatorAddress,
	}
}

func deployOldCoordinator(
	t *testing.T,
	linkAddress common.Address,
	bhsAddress common.Address,
	linkEthFeed common.Address,
	backend types.Backend,
	neil *bind.TransactOpts,
) (
	common.Address,
	*vrf_coordinator_v2.VRFCoordinatorV2,
) {
	ctx := testutils.Context(t)
	bytecode := 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	ctorArgs, err := evmutils.ABIEncode(`[{"type":"address"}, {"type":"address"}, {"type":"address"}]`, linkAddress, bhsAddress, linkEthFeed)
	require.NoError(t, err)
	bytecode = append(bytecode, ctorArgs...)
	nonce, err := backend.Client().PendingNonceAt(ctx, neil.From)
	require.NoError(t, err)
	gasPrice, err := backend.Client().SuggestGasPrice(ctx)
	require.NoError(t, err)
	unsignedTx := gethtypes.NewContractCreation(nonce, big.NewInt(0), 15e6, gasPrice, bytecode)
	signedTx, err := neil.Signer(neil.From, unsignedTx)
	require.NoError(t, err)
	err = backend.Client().SendTransaction(ctx, signedTx)
	require.NoError(t, err, "could not deploy old vrf coordinator to simulated blockchain")
	backend.Commit()
	receipt, err := backend.Client().TransactionReceipt(ctx, signedTx.Hash())
	require.NoError(t, err)
	oldRootContractAddress := receipt.ContractAddress
	require.NotEqual(t, common.HexToAddress("0x0"), oldRootContractAddress, "old vrf coordinator address equal to zero address, deployment failed")
	oldRootContract, err := vrf_coordinator_v2.NewVRFCoordinatorV2(oldRootContractAddress, backend.Client())
	require.NoError(t, err, "could not create wrapper object for old vrf coordinator v2")
	return oldRootContractAddress, oldRootContract
}

// Send eth from prefunded account.
// Amount is number of ETH not wei.
func sendEth(t *testing.T, key ethkey.KeyV2, b types.Backend, to common.Address, eth int) {
	ctx := testutils.Context(t)
	nonce, err := b.Client().PendingNonceAt(ctx, key.Address)
	require.NoError(t, err)
	tx := gethtypes.NewTx(&gethtypes.DynamicFeeTx{
		ChainID:   testutils.SimulatedChainID,
		Nonce:     nonce,
		GasTipCap: big.NewInt(1000000),    // 1 mwei
		GasFeeCap: assets.GWei(1).ToInt(), // block base fee in sim
		Gas:       uint64(21_000),
		To:        &to,
		Value:     big.NewInt(0).Mul(big.NewInt(int64(eth)), big.NewInt(1e18)),
		Data:      nil,
	})
	balBefore, err := b.Client().BalanceAt(ctx, to, nil)
	require.NoError(t, err)
	signedTx, err := key.SignerFn(testutils.SimulatedChainID)(key.Address, tx)
	require.NoError(t, err)
	err = b.Client().SendTransaction(ctx, signedTx)
	require.NoError(t, err)
	b.Commit()
	balAfter, err := b.Client().BalanceAt(ctx, to, nil)
	require.NoError(t, err)
	require.Equal(t, big.NewInt(0).Sub(balAfter, balBefore).String(), tx.Value().String())
}

func subscribeVRF(
	t *testing.T,
	author *bind.TransactOpts,
	consumerContract vrftesthelpers.VRFConsumerContract,
	coordinator v22.CoordinatorV2_X,
	backend types.Backend,
	fundingAmount *big.Int,
	nativePayment bool,
) (v22.Subscription, *big.Int) {
	var err error
	if nativePayment {
		_, err = consumerContract.CreateSubscriptionAndFundNative(author, fundingAmount)
	} else {
		_, err = consumerContract.CreateSubscriptionAndFund(author, fundingAmount)
	}
	require.NoError(t, err)
	backend.Commit()

	subID, err := consumerContract.SSubId(nil)
	require.NoError(t, err)

	sub, err := coordinator.GetSubscription(nil, subID)
	require.NoError(t, err)

	if nativePayment {
		require.Equal(t, fundingAmount.String(), sub.NativeBalance().String())
	} else {
		require.Equal(t, fundingAmount.String(), sub.Balance().String())
	}

	return sub, subID
}

func createVRFJobs(
	t *testing.T,
	fromKeys [][]ethkey.KeyV2,
	app *cltest.TestApplication,
	coordinator v22.CoordinatorV2_X,
	coordinatorAddress common.Address,
	batchCoordinatorAddress common.Address,
	uni coordinatorV2UniverseCommon,
	vrfOwnerAddress *common.Address,
	vrfVersion vrfcommon.Version,
	batchEnabled bool,
	gasLanePrices ...*assets.Wei,
) (jobs []job.Job) {
	ctx := testutils.Context(t)
	if len(gasLanePrices) != len(fromKeys) {
		t.Fatalf("must provide one gas lane price for each set of from addresses. len(gasLanePrices) != len(fromKeys) [%d != %d]",
			len(gasLanePrices), len(fromKeys))
	}
	// Create separate jobs for each gas lane and register their keys
	for i, keys := range fromKeys {
		var keyStrs []string
		for _, k := range keys {
			keyStrs = append(keyStrs, k.Address.String())
		}

		vrfkey, err := app.GetKeyStore().VRF().Create(ctx)
		require.NoError(t, err)

		jid := uuid.New()
		incomingConfs := 2
		var vrfOwnerString string
		if vrfOwnerAddress != nil {
			vrfOwnerString = vrfOwnerAddress.Hex()
		}

		spec := testspecs.GenerateVRFSpec(testspecs.VRFSpecParams{
			JobID:                    jid.String(),
			Name:                     fmt.Sprintf("vrf-primary-%d", i),
			VRFVersion:               vrfVersion,
			CoordinatorAddress:       coordinatorAddress.Hex(),
			BatchCoordinatorAddress:  batchCoordinatorAddress.Hex(),
			BatchFulfillmentEnabled:  batchEnabled,
			MinIncomingConfirmations: incomingConfs,
			PublicKey:                vrfkey.PublicKey.String(),
			FromAddresses:            keyStrs,
			BackoffInitialDelay:      10 * time.Millisecond,
			BackoffMaxDelay:          time.Second,
			V2:                       true,
			GasLanePrice:             gasLanePrices[i],
			VRFOwnerAddress:          vrfOwnerString,
			EVMChainID:               testutils.SimulatedChainID.String(),
		}).Toml()

		jb, err := vrfcommon.ValidatedVRFSpec(spec)
		require.NoError(t, err)
		t.Log(jb.VRFSpec.PublicKey.MustHash(), vrfkey.PublicKey.MustHash())
		err = app.JobSpawner().CreateJob(ctx, nil, &jb)
		require.NoError(t, err)
		registerProvingKeyHelper(t, uni, coordinator, vrfkey, ptr(gasLanePrices[i].ToInt().Uint64()))
		jobs = append(jobs, jb)
	}
	// Wait until all jobs are active and listening for logs
	require.Eventually(t, func() bool {
		jbs := app.JobSpawner().ActiveJobs()
		var count int
		for _, jb := range jbs {
			if jb.Type == job.VRF {
				count++
			}
		}
		return count == len(fromKeys)
	}, testutils.WaitTimeout(t), 100*time.Millisecond)
	// Unfortunately the lb needs heads to be able to backfill logs to new subscribers.
	// To avoid confirming
	// TODO: it could just backfill immediately upon receiving a new subscriber? (though would
	// only be useful for tests, probably a more robust way is to have the job spawner accept a signal that a
	// job is fully up and running and not add it to the active jobs list before then)
	time.Sleep(2 * time.Second)

	return
}

func requestRandomnessForWrapper(
	t *testing.T,
	vrfWrapperConsumer vrfv2_wrapper_consumer_example.VRFV2WrapperConsumerExample,
	consumerOwner *bind.TransactOpts,
	keyHash common.Hash,
	subID *big.Int,
	numWords uint32,
	cbGasLimit uint32,
	coordinator v22.CoordinatorV2_X,
	uni coordinatorV2UniverseCommon,
	wrapperOverhead uint32,
) (*big.Int, uint64) {
	minRequestConfirmations := uint16(3)
	_, err := vrfWrapperConsumer.MakeRequest(
		consumerOwner,
		cbGasLimit,
		minRequestConfirmations,
		numWords,
	)
	require.NoError(t, err)
	uni.backend.Commit()

	iter, err := coordinator.FilterRandomWordsRequested(nil, nil, []*big.Int{subID}, nil)
	require.NoError(t, err, "could not filter RandomWordsRequested events")

	var events []v22.RandomWordsRequested
	for iter.Next() {
		events = append(events, iter.Event())
	}

	wrapperIter, err := vrfWrapperConsumer.FilterWrapperRequestMade(nil, nil)
	require.NoError(t, err, "could not filter WrapperRequestMade events")

	wrapperConsumerEvents := []*vrfv2_wrapper_consumer_example.VRFV2WrapperConsumerExampleWrapperRequestMade{}
	for wrapperIter.Next() {
		wrapperConsumerEvents = append(wrapperConsumerEvents, wrapperIter.Event)
	}

	event := events[len(events)-1]
	eventKeyHash := event.KeyHash()
	wrapperConsumerEvent := wrapperConsumerEvents[len(wrapperConsumerEvents)-1]
	require.Equal(t, event.RequestID(), wrapperConsumerEvent.RequestId, "request ID in consumer log does not match request ID in coordinator log")
	require.Equal(t, keyHash.Bytes(), eventKeyHash[:], "key hash of event (%s) and of request not equal (%s)", hex.EncodeToString(eventKeyHash[:]), keyHash.String())
	require.Equal(t, cbGasLimit+(cbGasLimit/63+1)+wrapperOverhead, event.CallbackGasLimit(), "callback gas limit of event and of request not equal")
	require.Equal(t, minRequestConfirmations, event.MinimumRequestConfirmations(), "min request confirmations of event and of request not equal")
	require.Equal(t, numWords, event.NumWords(), "num words of event and of request not equal")

	return event.RequestID(), event.Raw().BlockNumber
}

// requestRandomness requests randomness from the given vrf consumer contract
// and asserts that the request ID logged by the RandomWordsRequested event
// matches the request ID that is returned and set by the consumer contract.
// The request ID and request block number are then returned to the caller.
func requestRandomnessAndAssertRandomWordsRequestedEvent(
	t *testing.T,
	vrfConsumerHandle vrftesthelpers.VRFConsumerContract,
	consumerOwner *bind.TransactOpts,
	keyHash common.Hash,
	subID *big.Int,
	numWords uint32,
	cbGasLimit uint32,
	coordinator v22.CoordinatorV2_X,
	backend types.Backend,
	nativePayment bool,
) (requestID *big.Int, requestBlockNumber uint64) {
	minRequestConfirmations := uint16(2)
	_, err := vrfConsumerHandle.RequestRandomness(
		consumerOwner,
		keyHash,
		subID,
		minRequestConfirmations,
		cbGasLimit,
		numWords,
		nativePayment,
	)
	require.NoError(t, err)
	backend.Commit()

	iter, err := coordinator.FilterRandomWordsRequested(nil, nil, []*big.Int{subID}, nil)
	require.NoError(t, err, "could not filter RandomWordsRequested events")

	var events []v22.RandomWordsRequested
	for iter.Next() {
		events = append(events, iter.Event())
	}

	requestID, err = vrfConsumerHandle.SRequestId(nil)
	require.NoError(t, err)

	event := events[len(events)-1]
	eventKeyHash := event.KeyHash()
	require.Equal(t, event.RequestID(), requestID, "request ID in contract does not match request ID in log")
	require.Equal(t, keyHash.Bytes(), eventKeyHash[:], "key hash of event (%s) and of request not equal (%s)", hex.EncodeToString(eventKeyHash[:]), keyHash.String())
	require.Equal(t, cbGasLimit, event.CallbackGasLimit(), "callback gas limit of event and of request not equal")
	require.Equal(t, minRequestConfirmations, event.MinimumRequestConfirmations(), "min request confirmations of event and of request not equal")
	require.Equal(t, numWords, event.NumWords(), "num words of event and of request not equal")
	require.Equal(t, nativePayment, event.NativePayment())

	return requestID, event.Raw().BlockNumber
}

// subscribeAndAssertSubscriptionCreatedEvent subscribes the given consumer contract
// to VRF and funds the subscription with the given fundingJuels amount. It returns the
// subscription ID of the resulting subscription.
func subscribeAndAssertSubscriptionCreatedEvent(
	t *testing.T,
	vrfConsumerHandle vrftesthelpers.VRFConsumerContract,
	consumerOwner *bind.TransactOpts,
	consumerContractAddress common.Address,
	fundingAmount *big.Int,
	coordinator v22.CoordinatorV2_X,
	backend types.Backend,
	nativePayment bool,
) *big.Int {
	// Create a subscription and fund with LINK.
	_, subID := subscribeVRF(t, consumerOwner, vrfConsumerHandle, coordinator, backend, fundingAmount, nativePayment)

	// Assert the subscription event in the coordinator contract.
	iter, err := coordinator.FilterSubscriptionCreated(nil, []*big.Int{subID})
	require.NoError(t, err)
	found := false
	for iter.Next() {
		if iter.Event().Owner() != consumerContractAddress {
			require.FailNowf(t, "SubscriptionCreated event contains wrong owner address", "expected: %+v, actual: %+v", consumerContractAddress, iter.Event().Owner())
		} else {
			found = true
		}
	}
	require.True(t, found, "could not find SubscriptionCreated event for subID %d", subID)

	return subID
}

func assertRandomWordsFulfilled(
	t *testing.T,
	requestID *big.Int,
	expectedSuccess bool,
	coordinator v22.CoordinatorV2_X,
	nativePayment bool,
) (rwfe v22.RandomWordsFulfilled) {
	// Check many times in case there are delays processing the event
	// this could happen occasionally and cause flaky tests.
	numChecks := 3
	found := false
	for range numChecks {
		filter, err := coordinator.FilterRandomWordsFulfilled(nil, []*big.Int{requestID}, nil)
		require.NoError(t, err)
		for filter.Next() {
			require.Equal(t, expectedSuccess, filter.Event().Success(), "fulfillment event success not correct, expected: %+v, actual: %+v", expectedSuccess, filter.Event().Success())
			require.Equal(t, requestID, filter.Event().RequestID())
			require.Equal(t, nativePayment, filter.Event().NativePayment())
			found = true
			rwfe = filter.Event()
		}

		if found {
			break
		}

		// Wait a bit and try again.
		time.Sleep(time.Second)
	}
	require.True(t, found, "RandomWordsFulfilled event not found")
	return
}

func assertNumRandomWords(
	t *testing.T,
	contract vrftesthelpers.VRFConsumerContract,
	numWords uint32,
) {
	var err error
	for i := range numWords {
		_, err = contract.SRandomWords(nil, big.NewInt(int64(i)))
		require.NoError(t, err)
	}
}

func mine(t *testing.T, requestID, subID *big.Int, backend types.Backend, db *sqlx.DB, vrfVersion vrfcommon.Version, chainID *big.Int) bool {
	txstore := txmgr.NewTxStore(db, logger.TestLogger(t))
	var metaField string
	if vrfVersion == vrfcommon.V2Plus {
		metaField = "GlobalSubId"
	} else if vrfVersion == vrfcommon.V2 {
		metaField = "SubId"
	} else {
		t.Errorf("unsupported vrf version %s", vrfVersion)
	}

	return assert.Eventually(t, func() bool {
		backend.Commit()
		txes, err := txstore.FindTxesByMetaFieldAndStates(testutils.Context(t), metaField, subID.String(), []txmgrtypes.TxState{txmgrcommon.TxConfirmed, txmgrcommon.TxFinalized}, chainID)
		require.NoError(t, err)
		for _, tx := range txes {
			if !checkForReceipt(t, db, tx.ID) {
				return false
			}
			meta, err := tx.GetMeta()
			require.NoError(t, err)
			if meta.RequestID.String() == common.BytesToHash(requestID.Bytes()).String() {
				return true
			}
		}
		return false
	}, testutils.WaitTimeout(t), time.Second)
}

func mineBatch(t *testing.T, requestIDs []*big.Int, subID *big.Int, backend types.Backend, db *sqlx.DB, vrfVersion vrfcommon.Version, chainID *big.Int) bool {
	requestIDMap := map[string]bool{}
	txstore := txmgr.NewTxStore(db, logger.TestLogger(t))
	var metaField string
	if vrfVersion == vrfcommon.V2Plus {
		metaField = "GlobalSubId"
	} else if vrfVersion == vrfcommon.V2 {
		metaField = "SubId"
	} else {
		t.Errorf("unsupported vrf version %s", vrfVersion)
	}
	for _, requestID := range requestIDs {
		requestIDMap[common.BytesToHash(requestID.Bytes()).String()] = false
	}
	return assert.Eventually(t, func() bool {
		backend.Commit()
		txes, err := txstore.FindTxesByMetaFieldAndStates(testutils.Context(t), metaField, subID.String(), []txmgrtypes.TxState{txmgrcommon.TxConfirmed, txmgrcommon.TxFinalized}, chainID)
		require.NoError(t, err)
		for _, tx := range txes {
			if !checkForReceipt(t, db, tx.ID) {
				return false
			}
			meta, err := tx.GetMeta()
			require.NoError(t, err)
			for _, requestID := range meta.RequestIDs {
				if _, ok := requestIDMap[requestID.String()]; ok {
					requestIDMap[requestID.String()] = true
				}
			}
		}
		foundAll := true
		for _, found := range requestIDMap {
			foundAll = foundAll && found
		}
		t.Log("requestIDMap:", requestIDMap)
		return foundAll
	}, testutils.WaitTimeout(t), time.Second)
}

func mineForceFulfilled(t *testing.T, requestID *big.Int, subID uint64, forceFulfilledCount int64, uni coordinatorV2Universe, db *sqlx.DB) bool {
	return assert.Eventually(t, func() bool {
		uni.backend.Commit()
		var txs []txmgr.DbEthTx
		err := db.Select(&txs, `
		SELECT * FROM evm.txes
		WHERE evm.txes.state IN ('confirmed', 'finalized')
			AND evm.txes.meta->>'RequestID' = $1
			AND CAST(evm.txes.meta->>'SubId' AS NUMERIC) = $2 ORDER BY created_at DESC
		`, common.BytesToHash(requestID.Bytes()).String(), subID)
		require.NoError(t, err)
		t.Log("num txs", len(txs))
		for _, tx := range txs {
			if !checkForReceipt(t, db, tx.ID) {
				return false
			}
		}
		return len(txs) >= int(forceFulfilledCount)
	}, testutils.WaitTimeout(t), time.Second)
}

func checkForReceipt(t *testing.T, db *sqlx.DB, txID int64) bool {
	// Confirm receipt is fetched and stored for transaction to consider it mined
	var count uint32
	sql := `
	SELECT count(*) FROM evm.receipts
	JOIN evm.tx_attempts ON evm.tx_attempts.hash = evm.receipts.tx_hash
	JOIN evm.txes ON evm.txes.ID = evm.tx_attempts.eth_tx_id
	WHERE evm.txes.ID = $1 AND evm.txes.state IN ('confirmed', 'finalized')`
	if txID != -1 {
		err := db.GetContext(testutils.Context(t), &count, sql, txID)
		require.NoError(t, err)
	} else {
		sql = strings.Replace(sql, "evm.txes.ID = $1", "evm.txes.meta->>'ForceFulfilled' IS NOT NULL", 1)
		err := db.GetContext(testutils.Context(t), &count, sql, txID)
		require.NoError(t, err)
	}
	return count > 0
}

func TestVRFV2Integration_SingleConsumer_ForceFulfillment(t *testing.T) {
	quarantine.Flaky(t, "DX-1875")
	t.Parallel()
	ownerKey := cltest.MustGenerateRandomKey(t)
	uni := newVRFCoordinatorV2Universe(t, ownerKey, 1)
	testSingleConsumerForcedFulfillment(
		t,
		ownerKey,
		uni,
		uni.oldRootContract,
		uni.oldRootContractAddress,
		uni.oldBatchCoordinatorContractAddress,
		false, // batchEnabled
		vrfcommon.V2,
	)
}

func TestVRFV2Integration_SingleConsumer_ForceFulfillment_BatchEnabled(t *testing.T) {
	t.Parallel()
	ownerKey := cltest.MustGenerateRandomKey(t)
	uni := newVRFCoordinatorV2Universe(t, ownerKey, 1)
	testSingleConsumerForcedFulfillment(
		t,
		ownerKey,
		uni,
		uni.oldRootContract,
		uni.oldRootContractAddress,
		uni.oldBatchCoordinatorContractAddress,
		true, // batchEnabled
		vrfcommon.V2,
	)
}

func TestVRFV2Integration_SingleConsumer_HappyPath_BatchFulfillment(t *testing.T) {
	t.Parallel()
	ownerKey := cltest.MustGenerateRandomKey(t)
	uni := newVRFCoordinatorV2Universe(t, ownerKey, 1)
	testSingleConsumerHappyPathBatchFulfillment(
		t,
		ownerKey,
		uni.coordinatorV2UniverseCommon,
		uni.vrfConsumers[0],
		uni.consumerContracts[0],
		uni.consumerContractAddresses[0],
		uni.rootContract,
		uni.rootContractAddress,
		uni.batchCoordinatorContractAddress,
		ptr(uni.vrfOwnerAddress),
		5,     // number of requests to send
		false, // don't send big callback
		vrfcommon.V2,
		false,
	)
}

func TestVRFV2Integration_SingleConsumer_HappyPath_BatchFulfillment_BigGasCallback(t *testing.T) {
	t.Parallel()
	ownerKey := cltest.MustGenerateRandomKey(t)
	uni := newVRFCoordinatorV2Universe(t, ownerKey, 1)
	testSingleConsumerHappyPathBatchFulfillment(
		t,
		ownerKey,
		uni.coordinatorV2UniverseCommon,
		uni.vrfConsumers[0],
		uni.consumerContracts[0],
		uni.consumerContractAddresses[0],
		uni.rootContract,
		uni.rootContractAddress,
		uni.batchCoordinatorContractAddress,
		ptr(uni.vrfOwnerAddress),
		5,    // number of requests to send
		true, // send big callback
		vrfcommon.V2,
		false,
	)
}

func TestVRFV2Integration_SingleConsumer_HappyPath(t *testing.T) {
	t.Parallel()
	ownerKey := cltest.MustGenerateRandomKey(t)
	uni := newVRFCoordinatorV2Universe(t, ownerKey, 1)
	testSingleConsumerHappyPath(
		t,
		ownerKey,
		uni.coordinatorV2UniverseCommon,
		uni.vrfConsumers[0],
		uni.consumerContracts[0],
		uni.consumerContractAddresses[0],
		uni.rootContract,
		uni.rootContractAddress,
		uni.batchCoordinatorContractAddress,
		ptr(uni.vrfOwnerAddress),
		vrfcommon.V2,
		false,
		func(t *testing.T, coordinator v22.CoordinatorV2_X, rwfe v22.RandomWordsFulfilled, expectedSubID *big.Int) {
			require.PanicsWithValue(t, "VRF V2 RandomWordsFulfilled does not implement SubID", func() {
				rwfe.SubID()
			})
		},
	)
}

func TestVRFV2Integration_SingleConsumer_EOA_Request(t *testing.T) {
	t.Skip("questionable value of this test")
	t.Parallel()
	ownerKey := cltest.MustGenerateRandomKey(t)
	uni := newVRFCoordinatorV2Universe(t, ownerKey, 1)
	testEoa(
		t,
		ownerKey,
		uni.coordinatorV2UniverseCommon,
		false,
		uni.batchBHSContractAddress,
		ptr(uni.vrfOwnerAddress),
		vrfcommon.V2,
	)
}

func TestVRFV2Integration_SingleConsumer_EOA_Request_Batching_Enabled(t *testing.T) {
	t.Skip("questionable value of this test")
	t.Parallel()
	ownerKey := cltest.MustGenerateRandomKey(t)
	uni := newVRFCoordinatorV2Universe(t, ownerKey, 1)
	testEoa(
		t,
		ownerKey,
		uni.coordinatorV2UniverseCommon,
		true,
		uni.batchBHSContractAddress,
		ptr(uni.vrfOwnerAddress),
		vrfcommon.V2,
	)
}

func testEoa(
	t *testing.T,
	ownerKey ethkey.KeyV2,
	uni coordinatorV2UniverseCommon,
	batchingEnabled bool,
	batchCoordinatorAddress common.Address,
	vrfOwnerAddress *common.Address,
	vrfVersion vrfcommon.Version,
) {
	ctx := testutils.Context(t)
	gasLimit := int64(2_500_000)

	finalityDepth := uint32(50)

	key1 := cltest.MustGenerateRandomKey(t)
	gasLanePriceWei := assets.GWei(10)
	config, _ := heavyweight.FullTestDBV2(t, func(c *chainlink.Config, s *chainlink.Secrets) {
		simulatedOverrides(t, assets.GWei(10), toml.KeySpecific{
			// Gas lane.
			Key:          ptr(key1.EIP55Address),
			GasEstimator: toml.KeySpecificGasEstimator{PriceMax: gasLanePriceWei},
		})(c, s)
		c.EVM[0].GasEstimator.LimitDefault = ptr(uint64(gasLimit))
		c.EVM[0].MinIncomingConfirmations = ptr[uint32](2)
		c.EVM[0].FinalityDepth = ptr(finalityDepth)
	})
	app := cltest.NewApplicationWithConfigV2AndKeyOnSimulatedBlockchain(t, config, uni.backend, ownerKey, key1)
	consumer := uni.vrfConsumers[0]

	// Createa a new subscription.
	subID := setupAndFundSubscriptionAndConsumer(
		t,
		uni,
		uni.rootContract,
		uni.rootContractAddress,
		consumer,
		consumer.From,
		vrfVersion,
		assets.Ether(1).ToInt(),
	)

	// Fund gas lane.
	sendEth(t, ownerKey, uni.backend, key1.Address, 10)
	require.NoError(t, app.Start(ctx))

	// Create VRF job.
	jbs := createVRFJobs(
		t,
		[][]ethkey.KeyV2{{key1}},
		app,
		uni.rootContract,
		uni.rootContractAddress,
		batchCoordinatorAddress,
		uni,
		vrfOwnerAddress,
		vrfVersion,
		batchingEnabled,
		gasLanePriceWei)
	keyHash := jbs[0].VRFSpec.PublicKey.MustHash()

	// Make a randomness request with the EOA. This request is impossible to fulfill.
	numWords := uint32(1)
	minRequestConfirmations := uint16(2)
	{
		_, err := uni.rootContract.RequestRandomWords(consumer, keyHash, subID, minRequestConfirmations, uint32(200_000), numWords, false)
		require.NoError(t, err)
	}
	uni.backend.Commit()

	// Ensure request is not fulfilled.
	gomega.NewGomegaWithT(t).Consistently(func() bool {
		uni.backend.Commit()
		runs, err := app.PipelineORM().GetAllRuns(ctx)
		require.NoError(t, err)
		t.Log("runs", len(runs))
		return len(runs) == 0
	}, 5*time.Second, time.Second).Should(gomega.BeTrue())

	// Create query to fetch the application's log broadcasts.
	var broadcastsBeforeFinality []evmlogger.LogBroadcast
	var broadcastsAfterFinality []evmlogger.LogBroadcast
	query := `SELECT block_hash, consumed, log_index, job_id FROM log_broadcasts`

	// Execute the query.
	require.NoError(t, app.GetDB().SelectContext(ctx, &broadcastsBeforeFinality, query))

	// Ensure there is only one log broadcast (our EOA request), and that
	// it hasn't been marked as consumed yet.
	require.Len(t, broadcastsBeforeFinality, 1)
	require.False(t, broadcastsBeforeFinality[0].Consumed)

	// Create new blocks until the finality depth has elapsed.
	for i := 0; i < int(finalityDepth); i++ {
		uni.backend.Commit()
	}

	// Ensure the request is still not fulfilled.
	gomega.NewGomegaWithT(t).Consistently(func() bool {
		uni.backend.Commit()
		runs, err := app.PipelineORM().GetAllRuns(ctx)
		require.NoError(t, err)
		t.Log("runs", len(runs))
		return len(runs) == 0
	}, 5*time.Second, time.Second).Should(gomega.BeTrue())

	// Execute the query for log broadcasts again after finality depth has elapsed.
	require.NoError(t, app.GetDB().SelectContext(ctx, &broadcastsAfterFinality, query))

	// Ensure that there is still only one log broadcast (our EOA request), but that
	// it has been marked as "consumed," such that it won't be retried.
	require.Len(t, broadcastsAfterFinality, 1)
	require.True(t, broadcastsAfterFinality[0].Consumed)

	t.Log("Done!")
}

func TestVRFV2Integration_SingleConsumer_EIP150_HappyPath(t *testing.T) {
	t.Skip("TODO: VRF-617")
	t.Parallel()
	ownerKey := cltest.MustGenerateRandomKey(t)
	uni := newVRFCoordinatorV2Universe(t, ownerKey, 1)
	testSingleConsumerEIP150(
		t,
		ownerKey,
		uni.coordinatorV2UniverseCommon,
		uni.batchCoordinatorContractAddress,
		false,
		vrfcommon.V2,
		false,
	)
}

func TestVRFV2Integration_SingleConsumer_EIP150_Revert(t *testing.T) {
	t.Parallel()
	ownerKey := cltest.MustGenerateRandomKey(t)
	uni := newVRFCoordinatorV2Universe(t, ownerKey, 1)
	testSingleConsumerEIP150Revert(
		t,
		ownerKey,
		uni.coordinatorV2UniverseCommon,
		uni.batchCoordinatorContractAddress,
		false,
		vrfcommon.V2,
		false,
	)
}

func deployWrapper(t *testing.T, uni coordinatorV2UniverseCommon, wrapperOverhead uint32, coordinatorOverhead uint32, keyHash common.Hash) (
	wrapper *vrfv2_wrapper.VRFV2Wrapper,
	wrapperAddress common.Address,
	wrapperConsumer *vrfv2_wrapper_consumer_example.VRFV2WrapperConsumerExample,
	wrapperConsumerAddress common.Address,
) {
	wrapperAddress, _, wrapper, err := vrfv2_wrapper.DeployVRFV2Wrapper(uni.neil, uni.backend.Client(), uni.linkContractAddress, uni.linkEthFeedAddress, uni.rootContractAddress)
	require.NoError(t, err)
	uni.backend.Commit()

	_, err = wrapper.SetConfig(uni.neil, wrapperOverhead, coordinatorOverhead, 0, keyHash, 10)
	require.NoError(t, err)
	uni.backend.Commit()

	wrapperConsumerAddress, _, wrapperConsumer, err = vrfv2_wrapper_consumer_example.DeployVRFV2WrapperConsumerExample(uni.neil, uni.backend.Client(), uni.linkContractAddress, wrapperAddress)
	require.NoError(t, err)
	uni.backend.Commit()

	return
}

func TestVRFV2Integration_SingleConsumer_Wrapper(t *testing.T) {
	t.Parallel()
	ctx := testutils.Context(t)
	wrapperOverhead := uint32(30_000)
	coordinatorOverhead := uint32(90_000)

	callBackGasLimit := int64(100_000) // base callback gas.
	key1 := cltest.MustGenerateRandomKey(t)
	gasLanePriceWei := assets.GWei(10)
	config, db := heavyweight.FullTestDBV2(t, func(c *chainlink.Config, s *chainlink.Secrets) {
		simulatedOverrides(t, assets.GWei(10), toml.KeySpecific{
			// Gas lane.
			Key:          ptr(key1.EIP55Address),
			GasEstimator: toml.KeySpecificGasEstimator{PriceMax: gasLanePriceWei},
		})(c, s)
		c.EVM[0].GasEstimator.LimitDefault = ptr[uint64](3_500_000)
		c.EVM[0].MinIncomingConfirmations = ptr[uint32](2)
	})
	ownerKey := cltest.MustGenerateRandomKey(t)
	uni := newVRFCoordinatorV2Universe(t, ownerKey, 1)
	app := cltest.NewApplicationWithConfigV2AndKeyOnSimulatedBlockchain(t, config, uni.backend, ownerKey, key1)

	// Fund gas lane.
	sendEth(t, ownerKey, uni.backend, key1.Address, 10)
	require.NoError(t, app.Start(ctx))

	// Create VRF job.
	jbs := createVRFJobs(
		t,
		[][]ethkey.KeyV2{{key1}},
		app,
		uni.rootContract,
		uni.rootContractAddress,
		uni.batchCoordinatorContractAddress,
		uni.coordinatorV2UniverseCommon,
		ptr(uni.vrfOwnerAddress),
		vrfcommon.V2,
		false,
		gasLanePriceWei)
	keyHash := jbs[0].VRFSpec.PublicKey.MustHash()

	wrapper, _, consumer, consumerAddress := deployWrapper(t, uni.coordinatorV2UniverseCommon, wrapperOverhead, coordinatorOverhead, keyHash)

	// Fetch Subscription ID for Wrapper.
	wrapperSubID, err := wrapper.SUBSCRIPTIONID(nil)
	require.NoError(t, err)

	// Fund Subscription.
	b, err := evmutils.ABIEncode(`[{"type":"uint64"}]`, wrapperSubID)
	require.NoError(t, err)
	_, err = uni.linkContract.TransferAndCall(uni.sergey, uni.rootContractAddress, assets.Ether(100).ToInt(), b)
	require.NoError(t, err)
	uni.backend.Commit()

	// Fund Consumer Contract.
	_, err = uni.linkContract.Transfer(uni.sergey, consumerAddress, assets.Ether(100).ToInt())
	require.NoError(t, err)
	uni.backend.Commit()

	// Make the first randomness request.
	numWords := uint32(1)
	requestID, _ := requestRandomnessForWrapper(t, *consumer, uni.neil, keyHash, new(big.Int).SetUint64(wrapperSubID), numWords, uint32(callBackGasLimit), uni.rootContract, uni.coordinatorV2UniverseCommon, wrapperOverhead)

	// Wait for simulation to pass.
	gomega.NewGomegaWithT(t).Eventually(func() bool {
		uni.backend.Commit()
		runs, err2 := app.PipelineORM().GetAllRuns(ctx)
		require.NoError(t, err2)
		t.Log("runs", len(runs))
		return len(runs) == 1
	}, testutils.WaitTimeout(t), time.Second).Should(gomega.BeTrue())

	// Mine the fulfillment that was queued.
	mine(t, requestID, new(big.Int).SetUint64(wrapperSubID), uni.backend, db, vrfcommon.V2, testutils.SimulatedChainID)

	// Assert correct state of RandomWordsFulfilled event.
	assertRandomWordsFulfilled(t, requestID, true, uni.rootContract, false)

	t.Log("Done!")
}

func TestVRFV2Integration_Wrapper_High_Gas(t *testing.T) {
	t.Parallel()
	ctx := testutils.Context(t)
	wrapperOverhead := uint32(30_000)
	coordinatorOverhead := uint32(90_000)

	key1 := cltest.MustGenerateRandomKey(t)
	callBackGasLimit := int64(2_000_000) // base callback gas.
	gasLanePriceWei := assets.GWei(10)
	config, db := heavyweight.FullTestDBV2(t, func(c *chainlink.Config, s *chainlink.Secrets) {
		simulatedOverrides(t, assets.GWei(10), toml.KeySpecific{
			// Gas lane.
			Key:          ptr(key1.EIP55Address),
			GasEstimator: toml.KeySpecificGasEstimator{PriceMax: gasLanePriceWei},
		})(c, s)
		c.EVM[0].GasEstimator.LimitDefault = ptr[uint64](3_500_000)
		c.EVM[0].MinIncomingConfirmations = ptr[uint32](2)
		c.Feature.LogPoller = ptr(true)
		c.EVM[0].LogPollInterval = commonconfig.MustNewDuration(1 * time.Second)
	})
	ownerKey := cltest.MustGenerateRandomKey(t)
	uni := newVRFCoordinatorV2Universe(t, ownerKey, 1)
	app := cltest.NewApplicationWithConfigV2AndKeyOnSimulatedBlockchain(t, config, uni.backend, ownerKey, key1)

	// Fund gas lane.
	sendEth(t, ownerKey, uni.backend, key1.Address, 10)
	require.NoError(t, app.Start(ctx))

	// Create VRF job.
	jbs := createVRFJobs(
		t,
		[][]ethkey.KeyV2{{key1}},
		app,
		uni.rootContract,
		uni.rootContractAddress,
		uni.batchCoordinatorContractAddress,
		uni.coordinatorV2UniverseCommon,
		ptr(uni.vrfOwnerAddress),
		vrfcommon.V2,
		false,
		gasLanePriceWei)
	keyHash := jbs[0].VRFSpec.PublicKey.MustHash()

	wrapper, _, consumer, consumerAddress := deployWrapper(t, uni.coordinatorV2UniverseCommon, wrapperOverhead, coordinatorOverhead, keyHash)

	// Fetch Subscription ID for Wrapper.
	wrapperSubID, err := wrapper.SUBSCRIPTIONID(nil)
	require.NoError(t, err)

	// Fund Subscription.
	b, err := evmutils.ABIEncode(`[{"type":"uint64"}]`, wrapperSubID)
	require.NoError(t, err)
	_, err = uni.linkContract.TransferAndCall(uni.sergey, uni.rootContractAddress, assets.Ether(100).ToInt(), b)
	require.NoError(t, err)
	uni.backend.Commit()

	// Fund Consumer Contract.
	_, err = uni.linkContract.Transfer(uni.sergey, consumerAddress, assets.Ether(100).ToInt())
	require.NoError(t, err)
	uni.backend.Commit()

	// Make the first randomness request.
	numWords := uint32(1)
	requestID, _ := requestRandomnessForWrapper(t, *consumer, uni.neil, keyHash, new(big.Int).SetUint64(wrapperSubID), numWords, uint32(callBackGasLimit), uni.rootContract, uni.coordinatorV2UniverseCommon, wrapperOverhead)

	// Wait for simulation to pass.
	gomega.NewGomegaWithT(t).Eventually(func() bool {
		uni.backend.Commit()
		runs, err2 := app.PipelineORM().GetAllRuns(ctx)
		require.NoError(t, err2)
		t.Log("runs", len(runs))
		return len(runs) == 1
	}, testutils.WaitTimeout(t), time.Second).Should(gomega.BeTrue())

	// Mine the fulfillment that was queued.
	mine(t, requestID, new(big.Int).SetUint64(wrapperSubID), uni.backend, db, vrfcommon.V2, testutils.SimulatedChainID)

	// Assert correct state of RandomWordsFulfilled event.
	assertRandomWordsFulfilled(t, requestID, true, uni.rootContract, false)

	t.Log("Done!")
}

func TestVRFV2Integration_SingleConsumer_NeedsBlockhashStore(t *testing.T) {
	t.Parallel()
	ownerKey := cltest.MustGenerateRandomKey(t)
	uni := newVRFCoordinatorV2Universe(t, ownerKey, 2)
	testMultipleConsumersNeedBHS(
		t,
		ownerKey,
		uni.coordinatorV2UniverseCommon,
		uni.vrfConsumers,
		uni.consumerContracts,
		uni.consumerContractAddresses,
		uni.rootContract,
		uni.rootContractAddress,
		uni.batchCoordinatorContractAddress,
		ptr(uni.vrfOwnerAddress),
		vrfcommon.V2,
		false,
	)
}

func TestVRFV2Integration_SingleConsumer_NeedsTrustedBlockhashStore(t *testing.T) {
	t.Parallel()
	ownerKey := cltest.MustGenerateRandomKey(t)
	uni := newVRFCoordinatorV2PlusUniverse(t, ownerKey, 2, true)
	testMultipleConsumersNeedTrustedBHS(
		t,
		ownerKey,
		uni,
		uni.vrfConsumers,
		uni.consumerContracts,
		uni.consumerContractAddresses,
		uni.rootContract,
		uni.rootContractAddress,
		uni.batchCoordinatorContractAddress,
		vrfcommon.V2Plus,
		false,
		false,
	)
}

func TestVRFV2Integration_SingleConsumer_NeedsTrustedBlockhashStore_AfterDelay(t *testing.T) {
	t.Parallel()
	ownerKey := cltest.MustGenerateRandomKey(t)
	uni := newVRFCoordinatorV2PlusUniverse(t, ownerKey, 2, true)
	testMultipleConsumersNeedTrustedBHS(
		t,
		ownerKey,
		uni,
		uni.vrfConsumers,
		uni.consumerContracts,
		uni.consumerContractAddresses,
		uni.rootContract,
		uni.rootContractAddress,
		uni.batchCoordinatorContractAddress,
		vrfcommon.V2Plus,
		false,
		true,
	)
}

func TestVRFV2Integration_SingleConsumer_BlockHeaderFeeder(t *testing.T) {
	t.Parallel()
	ownerKey := cltest.MustGenerateRandomKey(t)
	uni := newVRFCoordinatorV2Universe(t, ownerKey, 1)
	testBlockHeaderFeeder(
		t,
		ownerKey,
		uni.coordinatorV2UniverseCommon,
		uni.vrfConsumers,
		uni.consumerContracts,
		uni.consumerContractAddresses,
		uni.rootContract,
		uni.rootContractAddress,
		uni.batchCoordinatorContractAddress,
		ptr(uni.vrfOwnerAddress),
		vrfcommon.V2,
		false,
	)
}

func TestVRFV2Integration_SingleConsumer_NeedsTopUp(t *testing.T) {
	t.Skip("fails after geth upgrade https://github.com/smartcontractkit/chainlink/pull/11809")
	t.Parallel()
	ownerKey := cltest.MustGenerateRandomKey(t)
	uni := newVRFCoordinatorV2Universe(t, ownerKey, 1)
	testSingleConsumerNeedsTopUp(
		t,
		ownerKey,
		uni.coordinatorV2UniverseCommon,
		uni.vrfConsumers[0],
		uni.consumerContracts[0],
		uni.consumerContractAddresses[0],
		uni.rootContract,
		uni.rootContractAddress,
		uni.batchCoordinatorContractAddress,
		ptr(uni.vrfOwnerAddress),
		assets.Ether(1).ToInt(),   // initial funding of 1 LINK
		assets.Ether(100).ToInt(), // top up of 100 LINK
		vrfcommon.V2,
		false,
	)
}

func TestVRFV2Integration_SingleConsumer_BigGasCallback_Sandwich(t *testing.T) {
	t.Skip("fails after geth upgrade https://github.com/smartcontractkit/chainlink/pull/11809")
	ownerKey := cltest.MustGenerateRandomKey(t)
	uni := newVRFCoordinatorV2Universe(t, ownerKey, 1)
	testSingleConsumerBigGasCallbackSandwich(t, ownerKey, uni.coordinatorV2UniverseCommon, uni.batchCoordinatorContractAddress, vrfcommon.V2, false)
}

func TestVRFV2Integration_SingleConsumer_MultipleGasLanes(t *testing.T) {
	t.Skip("fails after geth upgrade https://github.com/smartcontractkit/chainlink/pull/11809")
	ownerKey := cltest.MustGenerateRandomKey(t)
	uni := newVRFCoordinatorV2Universe(t, ownerKey, 1)
	testSingleConsumerMultipleGasLanes(t, ownerKey, uni.coordinatorV2UniverseCommon, uni.batchCoordinatorContractAddress, vrfcommon.V2, false)
}

func TestVRFV2Integration_SingleConsumer_AlwaysRevertingCallback_StillFulfilled(t *testing.T) {
	ownerKey := cltest.MustGenerateRandomKey(t)
	uni := newVRFCoordinatorV2Universe(t, ownerKey, 0)
	testSingleConsumerAlwaysRevertingCallbackStillFulfilled(
		t,
		ownerKey,
		uni.coordinatorV2UniverseCommon,
		uni.batchCoordinatorContractAddress,
		false,
		vrfcommon.V2,
		false,
	)
}

func TestVRFV2Integration_ConsumerProxy_HappyPath(t *testing.T) {
	ownerKey := cltest.MustGenerateRandomKey(t)
	uni := newVRFCoordinatorV2Universe(t, ownerKey, 0)
	testConsumerProxyHappyPath(
		t,
		ownerKey,
		uni.coordinatorV2UniverseCommon,
		uni.batchCoordinatorContractAddress,
		vrfcommon.V2,
		false,
	)
}

func TestVRFV2Integration_ConsumerProxy_CoordinatorZeroAddress(t *testing.T) {
	ownerKey := cltest.MustGenerateRandomKey(t)
	uni := newVRFCoordinatorV2Universe(t, ownerKey, 0)
	testConsumerProxyCoordinatorZeroAddress(t, uni.coordinatorV2UniverseCommon)
}

func simulatedOverrides(t *testing.T, defaultGasPrice *assets.Wei, ks ...toml.KeySpecific) func(*chainlink.Config, *chainlink.Secrets) {
	return func(c *chainlink.Config, s *chainlink.Secrets) {
		require.Zero(t, testutils.SimulatedChainID.Cmp(c.EVM[0].ChainID.ToInt()))
		c.EVM[0].GasEstimator.Mode = ptr("FixedPrice")
		if defaultGasPrice != nil {
			c.EVM[0].GasEstimator.PriceDefault = defaultGasPrice
		}
		c.EVM[0].GasEstimator.LimitDefault = ptr[uint64](3_500_000)

		c.Feature.LogPoller = ptr(true)
		c.EVM[0].LogPollInterval = commonconfig.MustNewDuration(1 * time.Second)

		c.EVM[0].HeadTracker.MaxBufferSize = ptr[uint32](100)
		c.EVM[0].HeadTracker.SamplingInterval = commonconfig.MustNewDuration(0) // Head sampling disabled

		c.EVM[0].Transactions.ResendAfterThreshold = commonconfig.MustNewDuration(0)
		c.EVM[0].Transactions.ReaperThreshold = commonconfig.MustNewDuration(100 * time.Millisecond)

		c.EVM[0].FinalityDepth = ptr[uint32](15)
		c.EVM[0].MinIncomingConfirmations = ptr[uint32](1)
		c.EVM[0].MinContractPayment = commonassets.NewLinkFromJuels(100)
		c.EVM[0].KeySpecific = ks
	}
}

func registerProvingKeyHelper(t *testing.T, uni coordinatorV2UniverseCommon, coordinator v22.CoordinatorV2_X, vrfkey vrfkey.KeyV2, gasLaneMaxGas *uint64) {
	// Register a proving key associated with the VRF job.
	p, err := vrfkey.PublicKey.Point()
	require.NoError(t, err)
	if uni.rootContract.Version() == vrfcommon.V2Plus {
		if gasLaneMaxGas == nil {
			t.Error("gasLaneMaxGas must be non-nil for V2+")
		}
		_, err = coordinator.RegisterProvingKey(
			uni.neil, nil, pair(secp256k1.Coordinates(p)), gasLaneMaxGas)
	} else {
		if gasLaneMaxGas != nil {
			t.Log("gasLaneMaxGas is ignored for V2")
		}
		_, err = coordinator.RegisterProvingKey(
			uni.neil, &uni.nallory.From, pair(secp256k1.Coordinates(p)), nil)
	}
	require.NoError(t, err)
	uni.backend.Commit()
}

func TestExternalOwnerConsumerExample(t *testing.T) {
	owner := evmtestutils.MustNewSimTransactor(t)
	random := evmtestutils.MustNewSimTransactor(t)
	genesisData := gethtypes.GenesisAlloc{
		owner.From:  {Balance: assets.Ether(10).ToInt()},
		random.From: {Balance: assets.Ether(10).ToInt()},
	}
	backend := cltest.NewSimulatedBackend(t, genesisData, ethconfig.Defaults.Miner.GasCeil)
	linkAddress, _, linkContract, err := link_token_interface.DeployLinkToken(
		owner, backend.Client())
	require.NoError(t, err)
	backend.Commit()
	coordinatorAddress, _, coordinator, err :=
		vrf_coordinator_v2.DeployVRFCoordinatorV2(
			owner, backend.Client(), linkAddress, common.Address{}, common.Address{})
	require.NoError(t, err)
	backend.Commit()
	_, err = coordinator.SetConfig(owner, uint16(1), uint32(10000), 1, 1, big.NewInt(10), vrf_coordinator_v2.VRFCoordinatorV2FeeConfig{
		FulfillmentFlatFeeLinkPPMTier1: 0,
		FulfillmentFlatFeeLinkPPMTier2: 0,
		FulfillmentFlatFeeLinkPPMTier3: 0,
		FulfillmentFlatFeeLinkPPMTier4: 0,
		FulfillmentFlatFeeLinkPPMTier5: 0,
		ReqsForTier2:                   big.NewInt(0),
		ReqsForTier3:                   big.NewInt(0),
		ReqsForTier4:                   big.NewInt(0),
		ReqsForTier5:                   big.NewInt(0),
	})
	require.NoError(t, err)
	backend.Commit()
	consumerAddress, _, consumer, err := vrf_external_sub_owner_example.DeployVRFExternalSubOwnerExample(owner, backend.Client(), coordinatorAddress, linkAddress)
	require.NoError(t, err)
	backend.Commit()
	_, err = linkContract.Transfer(owner, consumerAddress, assets.Ether(2).ToInt())
	require.NoError(t, err)
	backend.Commit()
	AssertLinkBalances(t, linkContract, []common.Address{owner.From, consumerAddress}, []*big.Int{assets.Ether(999_999_998).ToInt(), assets.Ether(2).ToInt()})

	// Create sub, fund it and assign consumer
	_, err = coordinator.CreateSubscription(owner)
	require.NoError(t, err)
	backend.Commit()
	b, err := evmutils.ABIEncode(`[{"type":"uint64"}]`, uint64(1))
	require.NoError(t, err)
	_, err = linkContract.TransferAndCall(owner, coordinatorAddress, big.NewInt(0), b)
	require.NoError(t, err)
	_, err = coordinator.AddConsumer(owner, 1, consumerAddress)
	require.NoError(t, err)
	backend.Commit()
	_, err = consumer.RequestRandomWords(random, 1, 1, 1, 1, [32]byte{})
	require.Error(t, err)
	_, err = consumer.RequestRandomWords(owner, 1, 1, 1, 1, [32]byte{})
	require.NoError(t, err)

	// Reassign ownership, check that only new owner can request
	_, err = consumer.TransferOwnership(owner, random.From)
	require.NoError(t, err)
	backend.Commit()
	_, err = consumer.RequestRandomWords(owner, 1, 1, 1, 1, [32]byte{})
	require.Error(t, err)
	_, err = consumer.RequestRandomWords(random, 1, 1, 1, 1, [32]byte{})
	require.NoError(t, err)
}

func TestSimpleConsumerExample(t *testing.T) {
	owner := evmtestutils.MustNewSimTransactor(t)
	random := evmtestutils.MustNewSimTransactor(t)
	genesisData := gethtypes.GenesisAlloc{
		owner.From: {Balance: assets.Ether(10).ToInt()},
	}
	backend := cltest.NewSimulatedBackend(t, genesisData, ethconfig.Defaults.Miner.GasCeil)
	linkAddress, _, linkContract, err := link_token_interface.DeployLinkToken(
		owner, backend.Client())
	require.NoError(t, err)
	backend.Commit()
	coordinatorAddress, _, _, err :=
		vrf_coordinator_v2.DeployVRFCoordinatorV2(
			owner, backend.Client(), linkAddress, common.Address{}, common.Address{})
	require.NoError(t, err)
	backend.Commit()
	consumerAddress, _, consumer, err := vrf_single_consumer_example.DeployVRFSingleConsumerExample(owner, backend.Client(), coordinatorAddress, linkAddress, 1, 1, 1, [32]byte{})
	require.NoError(t, err)
	backend.Commit()
	_, err = linkContract.Transfer(owner, consumerAddress, assets.Ether(2).ToInt())
	require.NoError(t, err)
	backend.Commit()
	AssertLinkBalances(t, linkContract, []common.Address{owner.From, consumerAddress}, []*big.Int{assets.Ether(999_999_998).ToInt(), assets.Ether(2).ToInt()})
	_, err = consumer.TopUpSubscription(owner, assets.Ether(1).ToInt())
	require.NoError(t, err)
	backend.Commit()
	AssertLinkBalances(t, linkContract, []common.Address{owner.From, consumerAddress, coordinatorAddress}, []*big.Int{assets.Ether(999_999_998).ToInt(), assets.Ether(1).ToInt(), assets.Ether(1).ToInt()})
	// Non-owner cannot withdraw
	_, err = consumer.Withdraw(random, assets.Ether(1).ToInt(), owner.From)
	require.Error(t, err)
	_, err = consumer.Withdraw(owner, assets.Ether(1).ToInt(), owner.From)
	require.NoError(t, err)
	backend.Commit()
	AssertLinkBalances(t, linkContract, []common.Address{owner.From, consumerAddress, coordinatorAddress}, []*big.Int{assets.Ether(999_999_999).ToInt(), assets.Ether(0).ToInt(), assets.Ether(1).ToInt()})
	_, err = consumer.Unsubscribe(owner, owner.From)
	require.NoError(t, err)
	backend.Commit()
	AssertLinkBalances(t, linkContract, []common.Address{owner.From, consumerAddress, coordinatorAddress}, []*big.Int{assets.Ether(1_000_000_000).ToInt(), assets.Ether(0).ToInt(), assets.Ether(0).ToInt()})
}

func TestIntegrationVRFV2(t *testing.T) {
	t.Parallel()
	ctx := testutils.Context(t)
	// Reconfigure the sim chain with a default gas price of 1 gwei,
	// max gas limit of 2M and a key specific max 10 gwei price.
	// Keep the prices low so we can operate with small link balance subscriptions.
	gasPrice := assets.GWei(1)
	key := cltest.MustGenerateRandomKey(t)
	gasLanePriceWei := assets.GWei(10)
	config, _ := heavyweight.FullTestDBV2(t, func(c *chainlink.Config, s *chainlink.Secrets) {
		simulatedOverrides(t, gasPrice, toml.KeySpecific{
			Key:          &key.EIP55Address,
			GasEstimator: toml.KeySpecificGasEstimator{PriceMax: gasLanePriceWei},
		})(c, s)
		c.EVM[0].MinIncomingConfirmations = ptr[uint32](2)
	})
	uni := newVRFCoordinatorV2Universe(t, key, 1)
	carol := uni.vrfConsumers[0]
	carolContract := uni.consumerContracts[0]
	carolContractAddress := uni.consumerContractAddresses[0]

	app := cltest.NewApplicationWithConfigV2AndKeyOnSimulatedBlockchain(t, config, uni.backend, key)
	keys, err := app.KeyStore.Eth().EnabledKeysForChain(ctx, testutils.SimulatedChainID)
	require.NoError(t, err)
	require.Zero(t, key.Cmp(keys[0]))

	require.NoError(t, app.Start(ctx))
	var chainService commontypes.ChainService
	chainService, err = app.GetRelayers().LegacyEVMChains().Get(testutils.SimulatedChainID.String())
	require.NoError(t, err)
	chain, ok := chainService.(legacyevm.Chain)
	require.True(t, ok)
	listenerV2 := v22.MakeTestListenerV2(chain)

	jbs := createVRFJobs(
		t,
		[][]ethkey.KeyV2{{key}},
		app,
		uni.rootContract,
		uni.rootContractAddress,
		uni.batchCoordinatorContractAddress,
		uni.coordinatorV2UniverseCommon,
		ptr(uni.vrfOwnerAddress),
		vrfcommon.V2,
		false,
		gasLanePriceWei)
	keyHash := jbs[0].VRFSpec.PublicKey.MustHash()

	// Create and fund a subscription.
	// We should see that our subscription has 1 link.
	AssertLinkBalances(t, uni.linkContract, []common.Address{
		carolContractAddress,
		uni.rootContractAddress,
	}, []*big.Int{
		assets.Ether(500).ToInt(), // 500 link
		big.NewInt(0),             // 0 link
	})
	subFunding := decimal.RequireFromString("1000000000000000000")
	_, err = carolContract.CreateSubscriptionAndFund(carol,
		subFunding.BigInt())
	require.NoError(t, err)
	uni.backend.Commit()
	AssertLinkBalances(t, uni.linkContract, []common.Address{
		carolContractAddress,
		uni.rootContractAddress,
		uni.nallory.From, // Oracle's own address should have nothing
	}, []*big.Int{
		assets.Ether(499).ToInt(),
		assets.Ether(1).ToInt(),
		big.NewInt(0),
	})
	subId, err := carolContract.SSubId(nil)
	require.NoError(t, err)
	subStart, err := uni.rootContract.GetSubscription(nil, subId)
	require.NoError(t, err)

	// Make a request for random words.
	// By requesting 500k callback with a configured eth gas limit default of 500k,
	// we ensure that the job is indeed adjusting the gaslimit to suit the users request.
	gasRequested := 500_000
	nw := 10
	requestedIncomingConfs := 3
	_, err = carolContract.RequestRandomness(carol, keyHash, subId, uint16(requestedIncomingConfs), uint32(gasRequested), uint32(nw), false)
	require.NoError(t, err)

	// Oracle tries to withdraw before its fulfilled should fail
	_, err = uni.rootContract.OracleWithdraw(uni.nallory, uni.nallory.From, big.NewInt(1000))
	require.Error(t, err)

	for range requestedIncomingConfs {
		uni.backend.Commit()
	}

	// We expect the request to be serviced
	// by the node.
	var runs []pipeline.Run
	require.Eventually(t, func() bool {
		runs, err = app.PipelineORM().GetAllRuns(ctx)
		require.NoError(t, err)
		// It is possible that we send the test request
		// before the job spawner has started the vrf services, which is fine
		// the lb will backfill the logs. However, we need to
		// keep blocks coming in for the lb to send the backfilled logs.
		uni.backend.Commit()
		return len(runs) == 1 && runs[0].State == pipeline.RunStatusCompleted
	}, testutils.WaitTimeout(t), 1*time.Second)

	// Wait for the request to be fulfilled on-chain.
	var rf []v22.RandomWordsFulfilled
	require.Eventually(t, func() bool {
		rfIterator, err2 := uni.rootContract.FilterRandomWordsFulfilled(nil, nil, nil)
		require.NoError(t, err2, "failed to logs")
		uni.backend.Commit()
		for rfIterator.Next() {
			rf = append(rf, rfIterator.Event())
		}
		return len(rf) == 1
	}, testutils.WaitTimeout(t), 500*time.Millisecond)
	assert.True(t, rf[0].Success(), "expected callback to succeed")
	fulfillReceipt, err := uni.backend.Client().TransactionReceipt(ctx, rf[0].Raw().TxHash)
	require.NoError(t, err)

	// Assert all the random words received by the consumer are different and non-zero.
	seen := make(map[string]struct{})
	var rw *big.Int
	for i := range nw {
		rw, err = carolContract.SRandomWords(nil, big.NewInt(int64(i)))
		require.NoError(t, err)
		_, ok := seen[rw.String()]
		assert.False(t, ok)
		seen[rw.String()] = struct{}{}
	}

	// We should have exactly as much gas as we requested
	// after accounting for function look up code, argument decoding etc.
	// which should be fixed in this test.
	ga, err := carolContract.SGasAvailable(nil)
	require.NoError(t, err)
	gaDecoding := big.NewInt(0).Add(ga, big.NewInt(3701))
	assert.Equal(t, 0, gaDecoding.Cmp(big.NewInt(int64(gasRequested))), "expected gas available %v to exceed gas requested %v", gaDecoding, gasRequested)
	t.Log("gas available", ga.String())

	// Assert that we were only charged for how much gas we actually used.
	// We should be charged for the verification + our callbacks execution in link.
	subEnd, err := uni.rootContract.GetSubscription(nil, subId)
	require.NoError(t, err)
	var (
		end   = decimal.RequireFromString(subEnd.Balance().String())
		start = decimal.RequireFromString(subStart.Balance().String())
		wei   = decimal.RequireFromString("1000000000000000000")
		gwei  = decimal.RequireFromString("1000000000")
	)
	t.Log("end balance", end)
	linkWeiCharged := start.Sub(end)
	// Remove flat fee of 0.001 to get fee for just gas.
	linkCharged := linkWeiCharged.Sub(decimal.RequireFromString("1000000000000000")).Div(wei)
	gasPriceD := decimal.NewFromBigInt(gasPrice.ToInt(), 0)
	t.Logf("subscription charged %s with gas prices of %s gwei and %s ETH per LINK\n", linkCharged, gasPriceD.Div(gwei), vrftesthelpers.WeiPerUnitLink.Div(wei))
	expected := decimal.RequireFromString(strconv.Itoa(int(fulfillReceipt.GasUsed))).Mul(gasPriceD).Div(vrftesthelpers.WeiPerUnitLink)
	t.Logf("expected sub charge gas use %v %v off by %v", fulfillReceipt.GasUsed, expected, expected.Sub(linkCharged))
	// The expected sub charge should be within 200 gas of the actual gas usage.
	// wei/link * link / wei/gas = wei / (wei/gas) = gas
	gasDiff := linkCharged.Sub(expected).Mul(vrftesthelpers.WeiPerUnitLink).Div(gasPriceD).Abs().IntPart()
	t.Log("gasDiff", gasDiff)
	// NOTE: Changed diff from 200 to 2000 after VRF.sol interface changed from memory -> calldata.
	// Because of it, interface for VRFCoordinatorV2 had to be re-adjusted as well, but this change was not
	// fully propagated throughout the contract. The reason for this is because this contract version is
	// under the deprecation notice and V2 will not be deployed to any new chains in the future.
	// Gas diff spike here is due to not properly re-adjusting the entire VRFCoordinatorV2 contract to this change.
	assert.Less(t, gasDiff, int64(2000))

	// If the oracle tries to withdraw more than it was paid it should fail.
	_, err = uni.rootContract.OracleWithdraw(uni.nallory, uni.nallory.From, linkWeiCharged.Add(decimal.NewFromInt(1)).BigInt())
	require.Error(t, err)

	// Assert the oracle can withdraw its payment.
	_, err = uni.rootContract.OracleWithdraw(uni.nallory, uni.nallory.From, linkWeiCharged.BigInt())
	require.NoError(t, err)
	uni.backend.Commit()
	AssertLinkBalances(t, uni.linkContract, []common.Address{
		carolContractAddress,
		uni.rootContractAddress,
		uni.nallory.From, // Oracle's own address should have nothing
	}, []*big.Int{
		assets.Ether(499).ToInt(),
		subFunding.Sub(linkWeiCharged).BigInt(),
		linkWeiCharged.BigInt(),
	})

	// We should see the response count present after receipt is fetched and stored for transaction
	// Check periodically for receipt in case it is fetched and stored after more than 1 block
	require.Eventually(t, func() bool {
		uni.backend.Commit()
		var counts map[string]uint64
		counts, err = listenerV2.GetStartingResponseCountsV2(ctx)
		require.NoError(t, err)
		t.Log(counts, rf[0].RequestID().String())
		return uint64(1) == counts[rf[0].RequestID().String()]
	}, testutils.WaitTimeout(t), 1*time.Second)
}

func TestMaliciousConsumer(t *testing.T) {
	t.Parallel()
	key := cltest.MustGenerateRandomKey(t)
	uni := newVRFCoordinatorV2Universe(t, key, 1)
	testMaliciousConsumer(
		t,
		key,
		uni.coordinatorV2UniverseCommon,
		uni.batchCoordinatorContractAddress,
		false,
		vrfcommon.V2,
	)
}

func TestRequestCost(t *testing.T) {
	ctx := testutils.Context(t)
	key := cltest.MustGenerateRandomKey(t)
	uni := newVRFCoordinatorV2Universe(t, key, 1)

	cfg := configtest.NewGeneralConfigSimulated(t, nil)
	app := cltest.NewApplicationWithConfigV2AndKeyOnSimulatedBlockchain(t, cfg, uni.backend, key)
	require.NoError(t, app.Start(testutils.Context(t)))

	vrfkey, err := app.GetKeyStore().VRF().Create(ctx)
	require.NoError(t, err)
	registerProvingKeyHelper(t, uni.coordinatorV2UniverseCommon, uni.rootContract, vrfkey, nil)
	t.Run("non-proxied consumer", func(tt *testing.T) {
		carol := uni.vrfConsumers[0]
		carolContract := uni.consumerContracts[0]
		carolContractAddress := uni.consumerContractAddresses[0]

		_, err = carolContract.CreateSubscriptionAndFund(carol,
			big.NewInt(1000000000000000000)) // 0.1 LINK
		require.NoError(tt, err)
		uni.backend.Commit()
		subId, err := carolContract.SSubId(nil)
		require.NoError(tt, err)
		// Ensure even with large number of consumers its still cheap
		var addrs []common.Address
		for range 99 {
			addrs = append(addrs, testutils.NewAddress())
		}
		_, err = carolContract.UpdateSubscription(carol, addrs)
		require.NoError(tt, err)
		estimate := estimateGas(tt, uni.backend, common.Address{},
			carolContractAddress, uni.consumerABI,
			"requestRandomness", vrfkey.PublicKey.MustHash(), subId.Uint64(), uint16(2), uint32(10000), uint32(1))
		tt.Log("gas estimate of non-proxied testRequestRandomness:", estimate)
		// V2 should be at least (87000-134000)/134000 = 35% cheaper
		// Note that a second call drops further to 68998 gas, but would also drop in V1.
		assert.Less(tt, estimate, uint64(90_000),
			"requestRandomness tx gas cost more than expected")
	})

	t.Run("proxied consumer", func(tt *testing.T) {
		consumerOwner := uni.neil
		consumerContract := uni.consumerProxyContract
		consumerContractAddress := uni.consumerProxyContractAddress

		// Create a subscription and fund with 5 LINK.
		tx, err := consumerContract.CreateSubscriptionAndFund(consumerOwner, assets.Ether(5).ToInt())
		require.NoError(tt, err)
		uni.backend.Commit()
		r, err := uni.backend.Client().TransactionReceipt(testutils.Context(t), tx.Hash())
		require.NoError(tt, err)
		t.Log("gas used by proxied CreateSubscriptionAndFund:", r.GasUsed)

		subId, err := consumerContract.SSubId(nil)
		require.NoError(tt, err)
		_, err = uni.rootContract.GetSubscription(nil, subId)
		require.NoError(tt, err)

		theAbi := types.MustGetABI(vrf_consumer_v2_upgradeable_example.VRFConsumerV2UpgradeableExampleMetaData.ABI)
		estimate := estimateGas(tt, uni.backend, common.Address{},
			consumerContractAddress, &theAbi,
			"requestRandomness", vrfkey.PublicKey.MustHash(), subId.Uint64(), uint16(2), uint32(10000), uint32(1))
		tt.Log("gas estimate of proxied requestRandomness:", estimate)
		// There is some gas overhead of the delegatecall that is made by the proxy
		// to the logic contract. See https://www.evm.codes/#f4?fork=grayGlacier for a detailed
		// breakdown of the gas costs of a delegatecall.
		// NOTE this changed from 96000 to ~96500 with the sim upgrade?
		assert.Less(tt, estimate, uint64(96_500),
			"proxied testRequestRandomness tx gas cost more than expected")
	})
}

func TestMaxConsumersCost(t *testing.T) {
	key := cltest.MustGenerateRandomKey(t)
	uni := newVRFCoordinatorV2Universe(t, key, 1)
	carol := uni.vrfConsumers[0]
	carolContract := uni.consumerContracts[0]
	carolContractAddress := uni.consumerContractAddresses[0]

	cfg := configtest.NewGeneralConfigSimulated(t, nil)
	app := cltest.NewApplicationWithConfigV2AndKeyOnSimulatedBlockchain(t, cfg, uni.backend, key)
	require.NoError(t, app.Start(testutils.Context(t)))
	_, err := carolContract.CreateSubscriptionAndFund(carol,
		big.NewInt(1000000000000000000)) // 0.1 LINK
	require.NoError(t, err)
	uni.backend.Commit()
	subId, err := carolContract.SSubId(nil)
	require.NoError(t, err)
	var addrs []common.Address
	for range 98 {
		addrs = append(addrs, testutils.NewAddress())
	}
	_, err = carolContract.UpdateSubscription(carol, addrs)
	// Ensure even with max number of consumers its still reasonable gas costs.
	require.NoError(t, err)
	estimate := estimateGas(t, uni.backend, carolContractAddress,
		uni.rootContractAddress, uni.coordinatorABI,
		"removeConsumer", subId.Uint64(), carolContractAddress)
	t.Log(estimate)
	assert.Less(t, estimate, uint64(310000))
	estimate = estimateGas(t, uni.backend, carolContractAddress,
		uni.rootContractAddress, uni.coordinatorABI,
		"addConsumer", subId.Uint64(), testutils.NewAddress())
	t.Log(estimate)
	assert.Less(t, estimate, uint64(100000))
}

func TestFulfillmentCost(t *testing.T) {
	ctx := testutils.Context(t)
	key := cltest.MustGenerateRandomKey(t)
	uni := newVRFCoordinatorV2Universe(t, key, 1)

	cfg := configtest.NewGeneralConfigSimulated(t, nil)
	app := cltest.NewApplicationWithConfigV2AndKeyOnSimulatedBlockchain(t, cfg, uni.backend, key)
	require.NoError(t, app.Start(testutils.Context(t)))

	vrfkey, err := app.GetKeyStore().VRF().Create(ctx)
	require.NoError(t, err)
	registerProvingKeyHelper(t, uni.coordinatorV2UniverseCommon, uni.rootContract, vrfkey, nil)

	var (
		nonProxiedConsumerGasEstimate uint64
		proxiedConsumerGasEstimate    uint64
	)
	t.Run("non-proxied consumer", func(tt *testing.T) {
		carol := uni.vrfConsumers[0]
		carolContract := uni.consumerContracts[0]
		carolContractAddress := uni.consumerContractAddresses[0]

		_, err := carolContract.CreateSubscriptionAndFund(carol,
			big.NewInt(1000000000000000000)) // 0.1 LINK
		require.NoError(tt, err)
		uni.backend.Commit()
		subId, err := carolContract.SSubId(nil)
		require.NoError(tt, err)

		gasRequested := 50_000
		nw := 1
		requestedIncomingConfs := 3
		_, err = carolContract.RequestRandomness(carol, vrfkey.PublicKey.MustHash(), subId, uint16(requestedIncomingConfs), uint32(gasRequested), uint32(nw), false)
		require.NoError(t, err)
		for range requestedIncomingConfs {
			uni.backend.Commit()
		}

		requestLog := FindLatestRandomnessRequestedLog(tt, uni.rootContract, vrfkey.PublicKey.MustHash(), nil)
		s, err := proof.BigToSeed(requestLog.PreSeed())
		require.NoError(t, err)
		proof, rc, err := proof.GenerateProofResponseV2(app.GetKeyStore().VRF(), vrfkey.ID(), proof.PreSeedDataV2{
			PreSeed:          s,
			BlockHash:        requestLog.Raw().BlockHash,
			BlockNum:         requestLog.Raw().BlockNumber,
			SubId:            subId.Uint64(),
			CallbackGasLimit: uint32(gasRequested),
			NumWords:         uint32(nw),
			Sender:           carolContractAddress,
		})
		require.NoError(tt, err)
		nonProxiedConsumerGasEstimate = estimateGas(tt, uni.backend, common.Address{},
			uni.rootContractAddress, uni.coordinatorABI,
			"fulfillRandomWords", proof, rc)
		t.Log("non-proxied consumer fulfillment gas estimate:", nonProxiedConsumerGasEstimate)
		// Establish very rough bounds on fulfillment cost
		assert.Greater(tt, nonProxiedConsumerGasEstimate, uint64(120_000))
		assert.Less(tt, nonProxiedConsumerGasEstimate, uint64(500_000))
	})

	t.Run("proxied consumer", func(tt *testing.T) {
		consumerOwner := uni.neil
		consumerContract := uni.consumerProxyContract
		consumerContractAddress := uni.consumerProxyContractAddress

		_, err := consumerContract.CreateSubscriptionAndFund(consumerOwner, assets.Ether(5).ToInt())
		require.NoError(t, err)
		uni.backend.Commit()
		subId, err := consumerContract.SSubId(nil)
		require.NoError(t, err)
		gasRequested := 50_000
		nw := 1
		requestedIncomingConfs := 3
		_, err = consumerContract.RequestRandomness(consumerOwner, vrfkey.PublicKey.MustHash(), subId, uint16(requestedIncomingConfs), uint32(gasRequested), uint32(nw), false)
		require.NoError(t, err)
		for range requestedIncomingConfs {
			uni.backend.Commit()
		}

		requestLog := FindLatestRandomnessRequestedLog(t, uni.rootContract, vrfkey.PublicKey.MustHash(), nil)
		require.Equal(tt, subId, requestLog.SubID())
		s, err := proof.BigToSeed(requestLog.PreSeed())
		require.NoError(t, err)
		proof, rc, err := proof.GenerateProofResponseV2(app.GetKeyStore().VRF(), vrfkey.ID(), proof.PreSeedDataV2{
			PreSeed:          s,
			BlockHash:        requestLog.Raw().BlockHash,
			BlockNum:         requestLog.Raw().BlockNumber,
			SubId:            subId.Uint64(),
			CallbackGasLimit: uint32(gasRequested),
			NumWords:         uint32(nw),
			Sender:           consumerContractAddress,
		})
		require.NoError(t, err)
		proxiedConsumerGasEstimate = estimateGas(t, uni.backend, common.Address{},
			uni.rootContractAddress, uni.coordinatorABI,
			"fulfillRandomWords", proof, rc)
		t.Log("proxied consumer fulfillment gas estimate", proxiedConsumerGasEstimate)
		// Establish very rough bounds on fulfillment cost
		assert.Greater(t, proxiedConsumerGasEstimate, uint64(120_000))
		assert.Less(t, proxiedConsumerGasEstimate, uint64(500_000))
	})
}

func TestStartingCountsV1(t *testing.T) {
	cfg, db := heavyweight.FullTestDBNoFixturesV2(t, nil)

	ctx := testutils.Context(t)
	txStore := txmgr.NewTxStore(db, logger.TestLogger(t))
	lggr := logger.TestLogger(t)
	ks := keystore.NewInMemory(db, utils.FastScryptParams, lggr.Infof)
	ec := clienttest.NewClient(t)
	ec.On("ConfiguredChainID").Return(testutils.SimulatedChainID)
	ec.On("LatestBlockHeight", mock.Anything).Return(big.NewInt(2), nil).Maybe()
	txm := makeTestTxm(t, txStore, ks.Eth(), ec)
	legacyChains := evmtest.NewLegacyChains(t, evmtest.TestChainOpts{
		KeyStore:       ks.Eth(),
		Client:         ec,
		DB:             db,
		ChainConfigs:   cfg.EVMConfigs(),
		DatabaseConfig: cfg.Database(),
		FeatureConfig:  cfg.Feature(),
		ListenerConfig: cfg.Database().Listener(),
		TxManager:      txm,
	})
	chainService, err := legacyChains.Get(testutils.SimulatedChainID.String())
	require.NoError(t, err)
	chain, ok := chainService.(legacyevm.Chain)
	require.True(t, ok)
	listenerV1 := &v1.Listener{
		Chain: chain,
	}
	listenerV2 := v22.MakeTestListenerV2(chain)
	var counts map[[32]byte]uint64
	counts, err = listenerV1.GetStartingResponseCountsV1(testutils.Context(t))
	require.NoError(t, err)
	assert.Empty(t, counts)
	err = ks.Unlock(ctx, testutils.Password)
	require.NoError(t, err)
	k, err := ks.Eth().Create(testutils.Context(t), testutils.SimulatedChainID)
	require.NoError(t, err)
	b := time.Now()
	n1, n2, n3, n4 := types.Nonce(0), types.Nonce(1), types.Nonce(2), types.Nonce(3)
	reqID := evmutils.PadByteToHash(0x10)
	m1 := txmgr.TxMeta{
		RequestID: &reqID,
	}
	md1, err := json.Marshal(&m1)
	require.NoError(t, err)
	md1SQL := sqlutil.JSON(md1)
	reqID2 := evmutils.PadByteToHash(0x11)
	m2 := txmgr.TxMeta{
		RequestID: &reqID2,
	}
	md2, err := json.Marshal(&m2)
	md2SQL := sqlutil.JSON(md2)
	require.NoError(t, err)
	chainID := ubig.New(testutils.SimulatedChainID)
	confirmedTxes := []txmgr.Tx{
		{
			Sequence:           &n1,
			FromAddress:        k.Address,
			Error:              null.String{},
			BroadcastAt:        &b,
			InitialBroadcastAt: &b,
			CreatedAt:          b,
			State:              txmgrcommon.TxConfirmed,
			Meta:               &sqlutil.JSON{},
			EncodedPayload:     []byte{},
			ChainID:            chainID.ToInt(),
		},
		{
			Sequence:           &n2,
			FromAddress:        k.Address,
			Error:              null.String{},
			BroadcastAt:        &b,
			InitialBroadcastAt: &b,
			CreatedAt:          b,
			State:              txmgrcommon.TxConfirmed,
			Meta:               &md1SQL,
			EncodedPayload:     []byte{},
			ChainID:            chainID.ToInt(),
		},
		{
			Sequence:           &n3,
			FromAddress:        k.Address,
			Error:              null.String{},
			BroadcastAt:        &b,
			InitialBroadcastAt: &b,
			CreatedAt:          b,
			State:              txmgrcommon.TxConfirmed,
			Meta:               &md2SQL,
			EncodedPayload:     []byte{},
			ChainID:            chainID.ToInt(),
		},
		{
			Sequence:           &n4,
			FromAddress:        k.Address,
			Error:              null.String{},
			BroadcastAt:        &b,
			InitialBroadcastAt: &b,
			CreatedAt:          b,
			State:              txmgrcommon.TxConfirmed,
			Meta:               &md2SQL,
			EncodedPayload:     []byte{},
			ChainID:            chainID.ToInt(),
		},
	}
	// add unconfirmed txes
	unconfirmedTxes := []txmgr.Tx{}
	for i := int64(4); i < 6; i++ {
		reqID3 := evmutils.PadByteToHash(0x12)
		md, err2 := json.Marshal(&txmgr.TxMeta{
			RequestID: &reqID3,
		})
		require.NoError(t, err2)
		mdSQL := sqlutil.JSON(md)
		newNonce := types.Nonce(i + 1)
		unconfirmedTxes = append(unconfirmedTxes, txmgr.Tx{
			Sequence:           &newNonce,
			FromAddress:        k.Address,
			Error:              null.String{},
			CreatedAt:          b,
			State:              txmgrcommon.TxUnconfirmed,
			BroadcastAt:        &b,
			InitialBroadcastAt: &b,
			Meta:               &mdSQL,
			EncodedPayload:     []byte{},
			ChainID:            chainID.ToInt(),
		})
	}
	txList := append(confirmedTxes, unconfirmedTxes...)
	for i := range txList {
		err = txStore.InsertTx(ctx, &txList[i])
		require.NoError(t, err)
	}

	// add tx attempt for confirmed
	broadcastBlock := int64(1)
	var txAttempts []txmgr.TxAttempt
	for i := range confirmedTxes {
		txAttempts = append(txAttempts, txmgr.TxAttempt{
			TxID:                    int64(i + 1),
			TxFee:                   gas.EvmFee{GasPrice: assets.NewWeiI(100)},
			SignedRawTx:             []byte(`blah`),
			Hash:                    evmutils.NewHash(),
			BroadcastBeforeBlockNum: &broadcastBlock,
			State:                   txmgrtypes.TxAttemptBroadcast,
			CreatedAt:               time.Now(),
			ChainSpecificFeeLimit:   uint64(100),
		})
	}
	// add tx attempt for unconfirmed
	for i := range unconfirmedTxes {
		txAttempts = append(txAttempts, txmgr.TxAttempt{
			TxID:                  int64(i + 1 + len(confirmedTxes)),
			TxFee:                 gas.EvmFee{GasPrice: assets.NewWeiI(100)},
			SignedRawTx:           []byte(`blah`),
			Hash:                  evmutils.NewHash(),
			State:                 txmgrtypes.TxAttemptInProgress,
			CreatedAt:             time.Now(),
			ChainSpecificFeeLimit: uint64(100),
		})
	}
	for _, txAttempt := range txAttempts {
		t.Log("tx attempt eth tx id: ", txAttempt.TxID)
	}
	for i := range txAttempts {
		err = txStore.InsertTxAttempt(ctx, &txAttempts[i])
		require.NoError(t, err)
	}

	// add evm.receipts
	receipts := []types.Receipt{}
	for i := range 4 {
		receipts = append(receipts, types.Receipt{
			BlockHash:        evmutils.NewHash(),
			TxHash:           txAttempts[i].Hash,
			BlockNumber:      big.NewInt(broadcastBlock),
			TransactionIndex: 1,
		})
	}
	for i := range receipts {
		_, err = txStore.InsertReceipt(ctx, &receipts[i])
		require.NoError(t, err)
	}

	counts, err = listenerV1.GetStartingResponseCountsV1(testutils.Context(t))
	require.NoError(t, err)
	assert.Len(t, counts, 3)
	assert.Equal(t, uint64(1), counts[evmutils.PadByteToHash(0x10)])
	assert.Equal(t, uint64(2), counts[evmutils.PadByteToHash(0x11)])
	assert.Equal(t, uint64(2), counts[evmutils.PadByteToHash(0x12)])

	countsV2, err := listenerV2.GetStartingResponseCountsV2(testutils.Context(t))
	require.NoError(t, err)
	t.Log(countsV2)
	assert.Len(t, countsV2, 3)
	assert.Equal(t, uint64(1), countsV2[big.NewInt(0x10).String()])
	assert.Equal(t, uint64(2), countsV2[big.NewInt(0x11).String()])
	assert.Equal(t, uint64(2), countsV2[big.NewInt(0x12).String()])
}

func TestVRFV2Integration_ReplayOldRequestsOnStartUp(t *testing.T) {
	t.Parallel()
	ownerKey := cltest.MustGenerateRandomKey(t)
	uni := newVRFCoordinatorV2Universe(t, ownerKey, 1)

	testReplayOldRequestsOnStartUp(
		t,
		ownerKey,
		uni.coordinatorV2UniverseCommon,
		uni.vrfConsumers[0],
		uni.consumerContracts[0],
		uni.consumerContractAddresses[0],
		uni.rootContract,
		uni.rootContractAddress,
		uni.batchCoordinatorContractAddress,
		nil,
		vrfcommon.V2,
		false,
	)
}

func FindLatestRandomnessRequestedLog(t *testing.T,
	coordContract v22.CoordinatorV2_X,
	keyHash [32]byte,
	requestID *big.Int) v22.RandomWordsRequested {
	var rf []v22.RandomWordsRequested
	require.Eventually(t, func() bool {
		rfIterator, err2 := coordContract.FilterRandomWordsRequested(nil, [][32]byte{keyHash}, nil, []common.Address{})
		require.NoError(t, err2, "failed to logs")
		for rfIterator.Next() {
			if requestID == nil || requestID.Cmp(rfIterator.Event().RequestID()) == 0 {
				rf = append(rf, rfIterator.Event())
			}
		}
		return len(rf) >= 1
	}, testutils.WaitTimeout(t), 500*time.Millisecond)
	latest := len(rf) - 1
	return rf[latest]
}

func AssertLinkBalance(t *testing.T, linkContract *link_token_interface.LinkToken, address common.Address, balance *big.Int) {
	b, err := linkContract.BalanceOf(nil, address)
	require.NoError(t, err)
	assert.Equal(t, balance.String(), b.String(), "invalid balance for %v", address)
}

func AssertNativeBalance(t *testing.T, backend types.Backend, address common.Address, balance *big.Int) {
	b, err := backend.Client().BalanceAt(testutils.Context(t), address, nil)
	require.NoError(t, err)
	assert.Equal(t, balance.String(), b.String(), "invalid balance for %v", address)
}

func AssertLinkBalances(t *testing.T, linkContract *link_token_interface.LinkToken, addresses []common.Address, balances []*big.Int) {
	require.Equal(t, len(addresses), len(balances))
	for i, a := range addresses {
		AssertLinkBalance(t, linkContract, a, balances[i])
	}
}

func ptr[T any](t T) *T { return &t }

func pair(x, y *big.Int) [2]*big.Int { return [2]*big.Int{x, y} }

// estimateGas returns the estimated gas cost of running the given method on the
// contract at address to, on the given backend, with the given args, and given
// that the transaction is sent from the from address.
func estimateGas(t *testing.T, backend types.Backend,
	from, to common.Address, abi *abi.ABI, method string, args ...any,
) uint64 {
	rawData, err := abi.Pack(method, args...)
	require.NoError(t, err, "failed to construct raw %s transaction with args %s",
		method, args)
	callMsg := ethereum.CallMsg{From: from, To: &to, Data: rawData}
	estimate, err := backend.Client().EstimateGas(testutils.Context(t), callMsg)
	require.NoError(t, err, "failed to estimate gas from %s call with args %s",
		method, args)
	return estimate
}
